Recent experimental research suggests that when women stand as political candidates, they often enjoy more support amongst voters than men. However, women remain under-represented in politics worldwide, and observational research suggests sexism is prevalent and consequential for voter behaviour. Here, we attempt to bridge these contradictory findings and offer observational evidence of approximately 26,000 voters and 5,346 candidates in Australia, Canada, Britain, and the USA. American voters are slightly more likely to vote for a woman than a man, but we find no evidence of gender preference in the other countries. Interestingly, although sexism is prevalent in all four countries, we find no evidence for an effect of voter sexism on support for women candidates. We do find evidence that abstention, at least in the USA, is an important electoral choice for sexist partisans faced with a woman co-partisan candidate.