Democratic Debatesaudio & video

ABC's Torie Clarke talks with Ed Walsh about the final Democratic debate before the Pennsylvania primary.

Barack Obama and Hillary Clinton answer questions from ABC's Charles Gibson and George Stephanopoulos about their comments and background during Wednesday's Democratic debate .

Democratic strategist Michael Goldman tells Ed Walsh he sees no clear winner in last night's Democratic debate .

University of Virginia political science professor Larry Sabato previews the debate with WBZ's Laurie Kirby.

Jon says Tuesday night's Democratic debate was a textbook example of how a debate should be run.

CBS's Bob Scheiffer talks with WBZ's Deb Lawler about the final Democratic debate before Super Tuesday.

Barack Obama and Hillary Clinton debated for a final time before Super Tuesday. Here are some of Thursday night's highlights.

The candidates share their views at an MSNBC debate in Florida.

The first proposed site of an underground nuclear waste storage facility in Nevada has been fiercely opposed. For nuclear energy to be viable, Katie Couric says, we have to deal with the waste.

From the quality of the questions and the candidates' responses, to the partisan crowds, Jon Keller offers his view of Wednesday night's GOP debate.