Wisconsin Rep. Tammy Baldwin (D) has made it official — she’s running for the Senate seat being vacated by retiring Sen. Herb Kohl (D) next year. If she wins, Baldwin will make history as the the first openly gay member of the Senate. But how much will her sexuality factor into the race (if at all)? Baldwin was first elected to represent Wisconsin’s 2nd district in 1998, becoming the first female House member from the Badger State. She was also the first openly gay person to be elected to Congress as a non-incumbent. Rep. Barney Frank (D-Mass.) was the first...