Among Democrats, women are now up to about 40% in Congress. I could easily imagine that passing 50% in another decade or two as older members retire. But <10%

Among Democrats, women are now up to about 40% in Congress. I could easily imagine that passing 50% in another decade or two as older members retire. But <10% on the GOP side. The short answer is: there is still a significant part of the electorate which prefers to have male representatives, and various networks and institutional structures in some parties which give men an advantage.