I just heard a report on our local news out of Waco that Chet Edwards(D-TX) is rumored to be in the running for a cabinet post. He had mentioned this when he was vetted for the VP position as well.
For my part, as a Conservitive and a resident of Central TX I can say without reservation that would be a good move. He's a long time Congresscritter and is well respected in Washington as well as here in TX. He saved the Waco Veterans Hospital as well as fighting to save a number of military aviation projects that kept alot of jobs at L-3, a major employer. He's honest, and he gets a "B" from the NRA (Ron Paul is an A- for reference). Obama would be lucky to have him.