Citizens are more trustful of politics if their preferred party is an electoral winner and becomes part of the government. However, there remains the question of whether this positive effect of joining the government also holds for supporters of populist parties. Populists show low levels of political trust, as they strongly criticize the political elite. This study argues that voters of populist parties perceive the political system as more responsive to their concerns when their preferred party becomes part of the government and so they become more trustful of politics. Drawing on the case of Austria, the analyses demonstrate that political trust among populist party voters is higher when their party is in government. In contrast, non-populist voters' level of political trust is more stable, even when their party is not in government.

A voluminous literature documents that citizens' perceptions of democracy are shaped by electoral victories and defeats, but what reasoning do citizens use to evaluate parties as winners or losers? Drawing on research on partisan-motivated reasoning, I propose an own-party bias in winner–loser evaluations according to which voters evaluate the electoral fate of their party more favourably than that of other parties. Data gathered in the aftermath of the Danish parliamentary election in 2015 support this expectation. Citizens are more inclined to interpret the election outcome as successful for their preferred party, regardless of the actual election result. This is more pronounced the stronger their partisan attachment and among the less politically knowledgeable, who also assign less importance to objective indicators of electoral success. The findings have implications for our understanding of electoral winners and losers and of how electoral results shape party support and polarization.