Sean Patrick Maloney defeated incumbent Nan Hayworth in one of the most closely watched Congressional races in the country to become the first openly candidate elected to Congress from the state.
He faced a difficult reelection challenge after redistricting.
Blackburn helped draft the Republicans' antigay national platform.
Foxx is known for saying Matthew Shepard's murder was not a hate crime.
Allen has a record of opposing marriage equality and LGBT-inclusive hate-crimes laws.
Pocan succeeds Tammy Baldwin, who tonight was elected to the U.S. Senate.