Across the globe, women are underrepresented in elected politics. The study's case countries of Australia (ranked 33), Canada (61) and the United States (66) rank poorly for women's political representation. Drawing on role strain and gender-mainstreaming theories and applying large-scale survey experiments, we examine public opinion on non-quota mechanisms to bolster women's political participation. The experimental design manipulates the politician's gender and level of government (federal/local) before asking about non-quota supports to help the politician. We find public support for policies aimed at lessening work–family role strain is higher for a woman politician; these include a pay raise, childcare subsidies and housework allowances. This support is amplified among women who are presented with a woman politician in our experiment, providing evidence of a gender-affinity effect. The study's findings contribute to scholarship on gender equality and point to gender-mainstreaming mechanisms to help mitigate the gender gap in politics.