Biden-Ryan debate 2012: Democratic incumbent Joe Biden and Republican challenger Paul Ryan met for the first and only vice-presidential debate. The Democrats were left smarting after the first debate between President Barack Obama and Mitt Romney. It was up to Biden to get the re-election campaign back on track.
Ryan landed blows on US failings in Libya. While debate moderator pressed Ryan on Romney's proposal to cut taxes by 20%. But Biden's interruptions and laughing stole the show, setting Republican tongues wagging. Who won the debate?