How many gay representatives are in the 112th congress?

As of 2014, there are three members of the U.S. House of Representatives that are openly gay. They are Tammy Baldwin (D, Wisconsin) Barney Frank (D, Massachusetts) Jared Polis (D, Colorado).

Rep. Baldwin was the first openly gay person to win a non-encumbant election, and the only such woman. Notably, an openly gay Republican has never been elected to Congress, likely a reflection of that party's general anti-gay position.