Congress faces leaders in flux, big to-do list post-election

Congress is returning to an extremely volatile post-election landscape, with control of the House still undecided, party leadership in flux and a potentially consequential lame-duck session with legislation on gay marriage, Ukraine and government funding.

Control of the U.S. Senate: What are we waiting for?

The balance of power in the U.S. Senate is less certain after the Democrats' surprisingly strong showing in nearly every state not named Florida. Here's where things stand in the few close states.