Introduction: electoral turmoil and the representation gap on immigration

There is little question that in Western democracies, the mainstream parties – those that regularly alternate in playing a leading role in national governments – have been hurt in recent elections. The traditional centre-left parties in France and in the Netherlands have more or less disappeared and in Germany, France, Denmark, Italy and other countries new parties have disrupted the old order. The United Kingdom and the United States have not been exempt from disruptions of the same kind – witness Donald Trump and Brexit. This article is an attempt to determine the role that immigration has played in the recent transformation of politics in Western democracies. We utilize a unique seven nation data set (the United States, Canada, Denmark, France, Germany, Italy and the United Kingdom) created in the spring of 2015 and argue that immigration issues were at the heart of the changes we have observed in recent Western democratic elections.

Anxieties over immigration have risen sharply in recent years, and for most European countries we can use systematic survey data to date the increase to roughly 2012. Until then Eurobarometer respondents did not rank immigration as an important problem, while economic concerns and unemployment were much more frequently mentioned (European Commission, 2015). But most countries began experiencing a sharp increase in concern about immigration at that point. Eurobarometer data (from 2014 to 2017) show that Europeans generally tended to have quite negative attitudes toward immigrants from outside the EU while having (increasingly) positive attitudes toward immigrants from inside over these years (European Commission, 2018a; 2018b). It seems clear that immigration was a salient issue at the time of our cross-sectional survey and that it had, to some extent, partly surpassed concerns with unemployment. It is unclear whether this increase is attributable to a rise in actual levels of immigration, whether from inside or outside of Europe, to the continuing economic doldrums and the economic crises, especially in the less prosperous European countries, or to something else altogether.Footnote ¹

In spring 2015 an original comparative survey was conducted by YouGov allows us to investigate the effects of immigration attitudes on the political situations of Western democracies. The survey asked respondents two questions about immigration-related issues: the first about their views about the current level of immigrants and the second their general attitude towards immigrants already in the country.Footnote ² Since respondents had to place themselves as well as all relevant political parties in their country on these two policy dimensions, it is possible to place respondents' positions on immigration relative to where their parties are perceived on immigration, thus measuring perceived gaps between party positions and their partisans' positions. The results (see Figure 1) are that in every country the mainstream parties are perceived by their partisans to be more welcoming towards immigrants than their own partisans, and it is this representation gap which drives the article. Of course, as our data is cross-sectional, we cannot discuss over time variations and developments of this gap. Simply put, we observe that in spring 2015 the picture shows mainstream parties and their partisans quite far apart.

Figure 1. Average anti-immigration positions of partisans of mainstream parties (capital letters followed by the letter ‘s’) and average perceived positions of mainstream parties for its own partisans (plain capital letters) in various countries. In Canada the letter C stands for the Conservative Party and L is for the Liberal Party. In Denmark, the letter A is for the Social-Democratic Party and V for the right-wing party named Left, Denmark's Liberal Party. In France, S represents the Socialist Party, and R the Republicans. In Germany, S is for the SPD and C for the CDU-CSU. In Italy D represents the Democratic Party, and FI is for Go Italy. In the United Kingdom the letter L is for Labour Party, and the C for Conservative Party. In the United States D is for the Democratic Party, while R represents the Republican Party.

This article analyses the social, political and economic causes of the gap that empirically emerges between parties and voters on immigration, and it investigates its electoral consequence. Its original contribution lies in the merging of different strands of literature, such as studies looking at determinants of anti-immigrant attitudes and classical models of electoral behaviour, through an empirical investigation strategy featuring consistent individual-level measures for positions on immigration of both parties and voters in a cross-country comparative setting. In short, we confirm several previous findings concerning the determinants of anti-immigration positions, showing that culturally conservative and economically hurt voters are more likely to be more anti-immigrant than their party's official position. Perhaps the most important finding is that the representation gap on immigration issues has a significant impact on electoral results, in that parties are particularly likely to lose votes when they are more distant from their supporters on immigration issues.

The article is structured as follows. In the next two sections, we outline our main research questions and hypotheses, while discussing the relevant literatures. We then describe the dataset we employ for our empirical tests, and the specific methodological choices we made. Finally, we present and discuss the empirical evidence regarding the causes and the consequences of the representation gap on immigration. The conclusion follows.

The sources of immigration attitudes: literature and hypotheses

There are two questions we address in this article. First, how can we explain the immigration wedge between mainstream parties and their partisans? Second, what are the electoral consequences of this representation gap between parties and voters on immigration?

In order to address the aforementioned research questions, we need to discuss the possible explanations for the formation of anti-immigration attitudes proposed by the scientific literature (Citrin et al., Reference Citrin, Green, Muste and Wong1997; Scheve and Slaughter, Reference Scheve and Slaughter2001; Borjas, Reference Borjas2003; McLaren, Reference McLaren2003; O'Rourke, Reference O'Rourke2003; Mayda, Reference Mayda2006; McLaren and Johnson, Reference McLaren and Johnson2007). The sociological literature suggests that cultural and psychological variables are powerful predictors when explaining contemporary attitudes toward immigrants (Brader et al., Reference Brader, Valentino and Suhay2008). Although both short and long-term economic forces can play a role, cultural anxieties and stereotypes remain the most important generator of anti-immigrant attitudes.Footnote ³ Hainmueller and Hopkins (Reference Hainmueller and Hopkins2014: 3), based on their survey of the literature, conclude that ‘Overall, hypotheses grounded in self-interest have fared poorly, meaning that there is little accumulated evidence that citizens form their attitudes about immigration based on its effects on their personal economic situation. This pattern has held in both North America and Western Europe, in both observational and experimental studies’. Moreover, cultural attitudes toward diversity seem more important in explaining anti-immigrant attitudes than either private attitudes or sociotropic judgments. But cultural attitudes of the kind invoked here seem to be stable over time and unlikely, on that account, to explain change. Most of the relevant literature is based on cross-sectional studies; the rise of immigration as a salient issue, of explicitly anti-immigrant attitudes, and the political dislocations, has occurred over short time periods.

Economic literature, however, shows that immigration attitudes are related to economic vulnerability: ‘People with higher levels of education and occupational skills are more likely to favour immigration regardless of the skill attributes of the immigrants in question’ (Hainmueller and Hiscox, Reference Hainmueller and Hiscox2007: 399).Footnote ⁴ Other studies have shown other ways that economics plays a role in shaping a country's views toward immigration (Malhotra et al., Reference Malhotra, Margalit and Mo2013). Indeed, economic theory gives powerful reasons that lowering tariff barriers (for example) can have adverse effects on some workers and their communities.Footnote ⁵ Moreover, recent work suggests that these adverse effects increase relative to the aggregate benefits as the tariff barriers are reduced, which suggests that globalization dynamics might naturally lead to an increase in anti-immigrant attitudes.Footnote ⁶ It is very likely that negative economic outcomes reflect themselves in social and political attitudes, even if people misattribute the source of those outcomes. There is no reason to think, therefore, that the cross-sectional findings – that cultural attitudes are more powerful than narrow interest based economic attitudes in explaining ‘who’ is opposed to immigrants – are inconsistent with an economic account of the rise in anti-immigrant attitudes throughout the population. Moreover, it is difficult to cleanly separate economic from cultural effects. A substantial literature in political science suggests, for example, that people are likely to be guided in forming economic judgments by cultural or sociotropic considerations – how their nation or their community is doing economically – rather than by their own or their family's narrow interests (Kinder and Kiewiet, Reference Kinder and Kiewiet1981). We think it is misleading, therefore, to infer from these findings that short run economic forces are unimportant causes of immigration attitudes.

Our main argument is that, in fact, the recent intensification of the immigration issue, which may be partly traced to cyclical economic effects, has had significant political consequences. We will show that the rise of anti-immigrant attitudes has exposed the vulnerability of mainstream political parties either to internal fracture or to entry by new parties or political leaders.

The relationship between anti-immigration attitudes and economic anxieties on the one hand, and cultural conservatism on the other, is something widely shown by recent empirical literature, as our brief literature review clearly reveals.Footnote ⁷ However, in this article our analytic focus is not on attitudes on immigration issues held by voters per se, rather the focus is on how such individual-level attitudes interplay with elite choices on immigration, and on the electoral consequences of this interplay. From this perspective, we believe the aforementioned literature provides useful insights into understanding what lies at the core of the phenomenon we highlight: the fact that mainstream parties are more pro-immigration than are their partisans. We show that the gap between voters and their parties on immigration plays a relevant role in the electoral setbacks experienced by those parties in recent years across the Western world. Using independent measures for past and present voting behaviour we show that further a partisan perceives the distance between herself and her party on immigration the greater the likelihood is that they will desert their party in a future election. The hypotheses to be tested cover both economic and cultural bases. Namely, they are as follows.

Immigration and voting: literature and hypotheses

As anticipated, we are also interested in the electoral consequences of the strategic choices enacted by parties on the issue of immigration. We believe this constitutes an important contribution of this article, as in our view reactions toward immigrants have often been seen as not particularly relevant in terms of general electoral results, because of their low saliency, overshadowed by more salient domains – such as economic issues, for instance. This article shows that this perspective is in fact wrong. Possibly as a consequence of an increase in the saliency of immigration as an issue (Van der Brug et al., Reference Van der Brug, D'Amato, Ruedin and Berkhout2015), such reactions are now indeed very relevant for the whole of political systems, since they yield clear and large electoral consequences. Let us now briefly review classical approaches to electoral behaviour, and how they can relate to our study of the consequences of the immigration gap between mainstream parties and voters.

Political scientists have taken two general approaches to the study of voting behaviour. Following Downs (Reference Downs1957), who presented the classical motivation for prospective voting, the oldest tradition sees voting in elections as essentially forward looking. Voters were thought to vote for the option that would do the best job. This entailed forming beliefs as to what the candidates or the parties would do in the future. There is disagreement as to how such beliefs may be formed, especially depending on time and which side of the Atlantic is under investigation: would they depend on ideological leanings (Inglehart and Klingemann, Reference Inglehart, Klingemann, Budge, Crewe and Farlie1976), party affiliations (Campbell et al., Reference Campbell, Converse, Miller and Stokes1960; Bartle and Bellucci Reference Bartle and Bellucci2009), social groups (Lazarsfeld et al., Reference Lazarsfeld, Berelson and Gaudet1944; Lipset and Rokkan, Reference Lipset, Rokkan, Lipset and Rokkan1967; Bartolini and Mair, Reference Bartolini and Mair1990) or promises on the stump (Bartels, Reference Bartels1993). But the essential point is that many scholars have thought that prospective voting is the way that any minimally rational voter would make decisions.Footnote ⁸

This view is opposed by those who think that voting is essentially backward looking or retrospective. Key (Reference Key1964) characterized voters as ‘Gods of Vengeance and Reward’. By this account, when an incumbent candidate (or party) asks for her vote, the voter decides based on the past record rather than promises for the future.Footnote ⁹ Since the contribution by Fiorina (Reference Fiorina1981) on retrospective voting, a significant amount of empirical research has indicated the importance of parties' past record on the electoral prospects of that party's candidates. In particular, scholars have repeatedly shown the role of the national economic performance in a comparative perspective (Lewis-Beck, Reference Lewis-Beck1988; Duch and Stevenson, Reference Duch and Stevenson2008).

To be sure, these two models are not necessarily easy to tell apart: voters could use a party's past record to evaluate a party or they could use the past record to form beliefs about its likely future performance. Building on the insight of these seminal contributions about retrospective voting, we argue that the following hypotheses provide a robust test for the electoral effects of the representation gap on immigration:

In addition to distance from their own preferred party (in retrospective terms, when considering whether to vote for it again or not), we think that the immigration attitudes might also be a relevant predictor of vote choice for any other party (in prospective terms, for instance when considering all available parties for the next elections). Thus,

Data and methods

To test our main hypotheses, we use data from the Italian Centre for Electoral Studies (CISE)-Hoover Institution Comparative Partisanship Survey. This is an original dataset that offers a unique perspective on the roots of the anti-immigrant reactions to the second globalization. From March to June of 2015, YouGov conducted a series of Computer-Assisted Web Interview surveys on samples of the voting-age population in seven nations (United States, Canada, United Kingdom, Denmark, Italy, France and Germany), asking identical questions to respondents about immigration and other issues. The national samples, each consisting of roughly 1000 cases, are representative of the national voting-age population for gender, age class, and region of residence.Footnote ¹⁰ Obviously, the YouGov sample is a cross section, and so we can say little about attitude dynamics. However, the different countries were at different places in the business cycle in the spring of 2015 so that our measures of ‘country effects’ may incorporate some cyclic elements, though fixed effects can also pick up cultural or other intercountry differences.Footnote ¹¹ Given that the surveys were administered prior to the Syrian diaspora, our article might serve as a kind of baseline for future studies that might take account of more recent events.

The countries represented in the dataset vary widely in several important respects that might be relevant to immigration attitudes. Five are members of the EU (or were in 2015); the four countries on the European continent are inside both the Euro and Schengen areas. Three are, to some extent, committed to what is sometimes called the Anglo-Saxon model of ‘flexible’ labour markets and a common law legal system. The four continental countries have histories of relatively active government labour market policies. The electoral and party systems also vary widely: some countries use variants of majority or plurality rule to elect representatives and others employ forms of proportional representation. A case can be made that each country is ‘exceptional’ in some sense. But each also shares characteristics with others so that we can hope to isolate some effects that do not depend on particular country characteristics.

However, the unique feature of this study is found in the extensive battery of questions permitting respondents to place both themselves and the political parties on the same scales for each of several issues. Placement data will allow us to ask about the effects of immigration attitudes on placements, distances and, ultimately, on vote intentions. Moreover, as discussed above, we can carry out this assessment within the framework of the two prominent theories of voting found in the political science literature: prospective and retrospective voting models.

As anticipated earlier, this survey posed two questions about immigration. One question asks simply about the level of immigration, whether it should be decreased, kept the same or increased. The second question, which seems less sensitive to temporal variation and more focused on the respondent's view of her own society, concerns the degree to which immigrant residents should be integrated into society. In Table 1 we reported descriptive statistics for these two measures. Responses are dichotomized – with the anti-immigrant response coded as 1. Table 1 also shows the frequency distribution for an index constructed by adding the two responses together.Footnote ¹²

Table 1. Respondents' preferences on immigration items in the CISE-Hoover Institution Comparative Partisanship Survey

Note: The anti-immigration index counts how many times respondent has taken the anti-immigration stance on the two immigration items (0, 1 or 2).

In empirical terms the two individual-level immigration items appear strongly correlated (R=0.34), and Cronbach's alpha is above 0.5, indicating that the two can (although barely) be represented by a unified index. However, we need to stress that this index is built for mere descriptive evidence and for the sake of synthesis here and in Figure 1. Two separate figures built on the two original items show the same pattern with mainstream parties more pro-immigrant than their partisans. See Figures B1 and B2 in the Appendix 2. We do not argue that our index perfectly represents party position on the latent dimension of immigration. It simply represents a useful visualization of the immigration gap, the phenomenon we are interested in this study.

While there is significant cross-country variation in the responses, across the seven countries a majority agrees that the current level has to be decreased. Only in the two North American countries do majorities oppose decreasing immigration; even in those countries, more than 40% favour decreases in immigration. Germany, at almost 60% in favour of reducing the immigration, is next lowest, while France, Italy and the United Kingdom have over 70% of respondents agreeing that levels of immigration should be cut. With regard to integration of immigrants, again Canada is most inclined to favour integration over encouraging immigrants to leave, followed by Germany and the United States, with anti-immigration percentages below 40%. All other countries are over 40 with France the highest at exactly 50%.

As we have seen above, respondents had to place themselves on these two questions and then state where they perceived various political parties in their country to stand on the same immigration issues. Thus, responses to these survey items allow us to place respondents' positions on immigration relative to where their parties are perceived, which allows us to measure the representation gaps between party positions and their partisans' positions.Footnote ¹³

In Figure 1 we graphically show, for the various countries, the average positions on the anti-immigration index for partisans of mainstream parties (capital letters followed by the letter ‘s’) and the average perceived positions of the same mainstream parties in the eyes of their own partisans (plain capital letters). The figure allows us to immediately understand, compare and contrast where parties and voters stand on immigration. For instance, we can see that on average US Democrats are quite liberal on immigration but that on average they perceive their party to be more liberal than they are, or we can grasp the degree of polarization on immigration in the different countries by looking at the distance between centre-left and centre-right voters and parties: minimal in Denmark, still small in countries like Italy and Canada (although with remarkably different centres of gravity – much more anti-immigrants in the former), very large in France.

Even more importantly to us, the data reported in Figure 1 let us highlight a striking fact, which is the starting point of our study: in every country, all mainstream parties have positioned (or, actually, are perceived as positioning themselves) as more pro-immigrant than their partisans. In all seven countries, both centre-right and centre-left mainstream parties are perceived as substantially more pro-immigrant than their own partisans. In some countries (Canada and the United Kingdom) both mainstream parties are perceived by their partisans as much more pro-immigrant than partisans of both parties, to the point that the relative mean values appear statistically different.Footnote ¹⁴ In other countries, like the United States and Italy, one mainstream party is more pro-immigrant than its own partisans to a statistical extent, while the other is less distant from its own partisans. Still, all 14 of the mainstream parties are more pro-immigrant than their own partisans: this generalized representation gap on immigration is the paramount information of interest emerging from Figure 1 for our investigation.

In order to assess the sources of the gap between voters and their own parties on immigration, we will assume that the deviations of interest are only those to the illiberal side of the party position and count those (few) who deviate in the liberal direction the same as those who continue to favour the position of their party. Thus, we run Tobit regressions, where only those who deviate in the illiberal direction take positive values, using standard socio-demographic measures, ideological preferences, economic evaluations and measures of cultural conservatism as predictors. The latter requires further discussion, while all other variables are standard measures. Our dataset includes two survey items regarding culturally conservative issues – namely, attitudes towards the death penalty and gay marriages.Footnote ¹⁵ We acknowledge that these are not ideal indicators. Still, these are the only available measures in the dataset that are somewhat related to social issues. As our literature review has pointed to the relevance of cultural conservatism, we deem useful to include them as independent variables. In the end, we believe they can be meaningfully employed as adequate enough indicators for respondents' cultural conservatism, tapping into the civil rights and law-and-order dimensions of it.Footnote ¹⁶

To empirically investigate the electoral consequences of the representation gap on immigration, as anticipated above, we will follow two alternative routes. First, we take a ‘retrospective’ view of elections and ask whether a party pays a price for being out of step with those who voted for it. We define party loyalty as the propensity to vote for the same party that constituents voted for last time and look only at loyalty to parties for various levels of immigration attitudes. We calculated how far a respondent is from her preferred party (the one voted in previous national general elections) and compare that against the frequency that they will vote for that party in the future. This measurement strategy is consistent with the concept of normal vote (Converse, Reference Converse, Campbell, Converse, Miller and Stokes1966), the idea that voters will generally vote for their favoured party, although they might occasionally deviate from such behaviour. To be exhaustive, we need to point out that in two alternative ways to define party positions, the ones from which we compute respondent's distances. First, we simply looked at respondent's placement of the party. We call this ‘subjective’ distance. However, this measure presents two potential weaknesses. On the one hand, it is not available for those respondents failing to place their past-vote party.Footnote ¹⁷ Secondly, it is prone to the rationalization issue – voters distancing themselves on the issue from a party they have decided not to vote.Footnote ¹⁸ There is an alternative, which allows us to address both these issues. It consists of using the average placement of the party in the whole sample as the reference point from which we compute respondents' distances. We call this ‘objective’ distance. This way, all respondents are included in the analyses, provided that they placed themselves. Furthermore, it minimizes the rationalization issue, as each respondent is not able to distance herself from a party: she simply states her preferred position, and how far from the party this will be is not determined by her, but by the whole of the national respondents.

In addition to the retrospective voting approach, the second route is a prospective voting model. We assume that voters form future-oriented projections as to how the candidates would perform in office by using a simple spatial model. Vote propensity is a variable that allows the respondent to vote for any party with her reported propensity score. Thus, the data takes the form of a stacked data matrix.Footnote ¹⁹ Because each respondent appears several times, as many as the parties she has validly assigned a vote propensity score to, we need to take account of correlation in the error structure. We run two ordered logit analyses of the propensity to vote for a party as a function of the distance between the party and the respondent on each issue. As a control, we include a Left–Right scale which, in principle, ought to be related to the spatial judgments. We also control for some plausible measures of cultural attitudes (the death penalty and gay marriages variable).Footnote ²⁰ Each analysis is clustered by respondent in order to correct for correlated errors.

Findings: explaining the representation gap on immigration

In this section we investigate which respondents' characteristics are linked to the distance from their own mainstream party on immigration issues. Table 2 presents the results separately for mainstream parties in government and in the opposition. Our findings provide a strong confirmation for H1 and particularly H2. Indeed, dissatisfaction with how the economy is doing and cultural conservatism do dispose people to deviate to the right of the previously voted party on immigration policy issues. We note that, even controlling for government evaluation, an economic evaluation (sociotropic or egotropic) exerts positive and significant effect on both the integration and the level variables for governing parties. On the contrary, we do not find significant effects of the economy on distance from opposition parties. Furthermore, the strong effects of cultural conservatism stand out. Both our indicators (death penalty and gay marriages) show extremely significant and positive effects on the distance to the right of the previously voted party, on both the integration and the level variables – regardless of the government/opposition condition of the party.

Table 2. Tobit regressions of distances on immigration from previously voted mainstream parties on individual characteristics^a

Notes: P-values, calculated with two-tailed tests, in parentheses; *P < 0.05, **P < 0.01, ***P < 0.001; the pseudo R ² is McFadden.

^a The models reported in Table 2 employ as DV the objective distances. As a robustness check we replicated these empirical tests employing the alternative subjective distances, which confirm the hypothesized effects of economic distress and conservatism on the immigration gap. Regression tables are reported in the Appendix 2 (see Table B2).

Beyond our hypothesis testing, Table 2 provides further evidence of interest. Country effects must be read as relative to Canada which is omitted from the regressions. The country effects are especially striking in the last column of the table, in which opposition parties in all the other nations exhibit smaller anti-immigrant gaps than did the Canadian opposition (the pro-immigrant Liberals who remained in opposition until October 2015). Also striking is the fact that governing parties in Denmark, France, Italy and the United States exhibit a very large gap on the preferred level of immigration. Liberal governing parties in these countries were unable to persuade their electoral base to support a pro-immigrant stance. Note that older people and females are more likely to prefer reducing the number of immigrants but are not necessarily opposed to integrating those who are already present into society. On the other hand, the effect of college, higher income or favourable evaluations of the government all reduce anti-immigration deviations.

The overall picture has become increasingly familiar with time. Liberal governing parties exhibit large gaps on immigration, whereas conservative parties in government (in Germany, Canada, the United Kingdom) are less vulnerable on the issue. At least this was so until the massive wave of Syrian immigrants began to appear in Europe.

Findings: the electoral consequences of the representation gap on immigration

We now examine the effects that the representation gap on immigration has on electoral behaviour. As we have pointed out, the mainstream parties tend systematically to be more pro-immigrant than their own partisans. This seems to place them in a vulnerable position if popular attention to those issues increases. In the first model of this section, the question of how the immigration issue affects an individual's vote for his or her previously voted mainstream party is answered (Table 3).

Table 3. Effects on Vote Propensity for the mainstream party voted in previous general elections^a

Notes: P-values, calculated with two-tailed tests, in parentheses; *P < 0.05, **P < 0.01, ***P < 0.001; the pseudo R ² is McFadden.

^a Logistic regressions. Fixed effects and SES controls are omitted. We also included a PID dichotomy, scoring 1 if respondent declared voted party was the party she feels particularly close to, 0 otherwise. See question wording in the Appendix 1. Country fixed effects are operationalized through country dummies. Full regression estimates are reported in the Appendix 2 (see Table B3). We replicated these regressions allowing both slopes and intercept to randomly vary by country in multi-level regression analyses. Findings are reported in the Appendix 2 (see Table B4) and generally confirm what is presented here.

To recall, we have two separate measures of the distance between respondent's and party's positions – one in which the latter is assessed by the respondent herself, and one in which it is measured as the average perceived party position across the whole sample. The results show that both distance on the immigration level and integration have independent negative and significant effects on vote propensity for the respondents' preferred party – no matter which alternative distances (objective or subjective) we look at. The further one is from the previously voted party on both immigration dimensions, the less likely she will be to vote for that party in future elections, as measured by the future vote propensity question. This appears as a strong empirical confirmation for H3.

Again, regardless of whether measured objectively or subjectively, the distance on the integration variable has a coefficient twice the size of the immigration level. It could be that this result is due to reactions to immigrants who are already in the country and are not yet fully assimilated from the viewpoint of the respondent, making the integration problem more immediate in time than future immigration. Subsequent work will have to determine whether that is true. It is, nevertheless, true that a retrospective model that places weight on immigration attitudes has explanatory power compared to models that do not. This is a warning to mainstream political leaders that deviating from party supporters' views on immigration (which are generally more conservative than party leaders) can threaten re-election.

We can now turn to a prospective voting model. Table 4 presents two ordered logit analyses of the propensity to vote for a party as a function of the distance between the party and the respondent on each issue. The left-hand column presents the results for objective distances – where we define the party position as the average placement of the party in the whole sample. The model employing subjective distances – the difference between the respondent's self-placement and her placement of the party – is reported in the right-hand column. As above, we suppress the estimates of SES controls and country fixed effects. The last row of the table shows that respondent's distance from a party on the Left–Right dimension is a powerful predictor of vote propensities as would be expected if voting behaviour was largely driven by a one-dimensional model.

Table 4. Effects of party-respondent distances on Vote Propensity for a party^a

Notes: P-values, calculated with two-tailed tests, in parentheses; *P < 0.05, **P < 0.01, ***P < 0.001; the pseudo R ² is McFadden.

^a Ordered logistic regressions. Fixed effects and SES controls are omitted. Country fixed effects are operationalized through country dummies. Full results are reported in the Appendix 2 (See Table B5). Again, we replicated these regressions with multi-level regression analyses. Findings confirm what is presented here and are available on request. In the Appendix 2 we also report the country-specific models (Tables B6 and B7), which generally confirm the strength and significance of the effects of the immigration items – although with some exceptions.

More importantly to our investigation, the results in Table 4 show that even after controlling for party-respondent distances on the Left–Right dimension, issue distances also have strong effects on the vote propensity, and this is particularly the case for the immigration issues. On both level and integration, the coefficients for party-respondent distance both objectively and subjectively defined are highly significant. Furthermore, the only other specified issues for which this is true are income inequality, and minimum wage where the sign is also negative.

Thus, over nine issues, the two immigration questions each stand out separately, suggesting that not only is the electoral politics in these countries multi-dimensional, but also the effects of immigration attitudes emerge as real and powerful drivers of voting preferences, independent of traditional left–right party positions. These findings provide a robust validation for H4.

We suspect that this political configuration – in which the traditional parties seem unable to absorb new and important issues – may provide fertile soil for political realignment in some of the advanced democracies. There is an opening for political entrepreneurs to exploit the distance between voters and the mainstream parties on immigration, at least as long as the mainstream parties do not adjust their positions to bring them closer to their constituents. Of course it is also possible for the constituents to change their minds.