In this context I recall an article on Sen. Mikulski, who organized a weekly/monthly? luncheon for female senators which was credited with helping them to assume a greater role in the Senate. (IIRC she was an early, maybe the first elected female senator in the current era. Just checked wikipedia--I thought maybe I was slighting Nancy Kassebaum (KS) and I was. She
Assuming it happens, I predict there will be multiple articles on the issue of how a common gender has affected the dynamics of the group.
[Corrected: Paula Hawkins served only one term, ending on the day Mikulski was sworn in. So it was a bipartisan club of two from 1987 to 1992.]