Though partisanship remains a far bigger factor than gender in U.S. abortion attitudes, the opinions of men and women have diverged somewhat in recent years – particularly on the question of legality. Today, nearly two-thirds of women (64%) say abortion should be legal in all or most cases, while 34% say it should be illegal in all or most cases. By contrast, 55% of men say abortion should be legal, and 44% say it should be illegal. The 9-point gender gap in the shares expressing support for legal abortion is as wide as we’ve seen in the last two decades. Over much of that time, there were no significant gender differences on this question. This largely reflects the emergence of a gap between Republican and Republican-leaning men and women. Among Republicans Majorities of Republican men and women continue to say abortion should be illegal in all or most cases, but those majorities differ in size: Two-thirds of Republican men say this, compared with 58% of Republican women.…