Rep. Melissa Hart, R-Pa, left, and Rep. Tom Cole, R-Okla. leave a closed-door meeting on Capitol Hill in Washington in this Oct. 5, 2006 file photo. Voters in Pennsylvania rarely elect black and female candidates. But they'll have to choose one or the other in the April 22 Democratic presidential primary contest between Sens. Barack Obama and Hillary Rodham Clinton. (AP Photo/Caleb Jones, File)