Come on now, surely many of the women Senators and Representatives have beaten men!

I did say that I was sure there were some, but I couldn't think of any. I'm sure in many places, if you have a "D" (or an "R") after your name on the ballot, you're going to win regardless of gender. AZ used to be like that, but we have more Dems in power than I can remember in previous decades. We did have a short stint where we had Babbitt (governor), DeConcini (senator), but the other senator was Barry Goldwater (and then McCain). The Kelly/Sinema combo was the first time I can remember two Dem senators. Hobbs is our first Dem governor in 15 years, and with Gallego winning, we'll have both senators and governor as Dems.

Back to the main point, a quick check revealed only old articles (10+ years) about women voting for women. So I don't know what the current scholarship on that is.