In every U.S. presidential election since 1964, more women than men have turned out to vote. And since 1980, the two genders have differed markedly in their preferences at the ballot box. Women tend to choose candidates from the Democratic Party more than men do; men do the same with Republicans. Though this gender gap in voting is not just in the U.S. — women around the world have become more likely to vote for candidates on the left, particularly in western Europe and Canada — it’s become a de