SUBSCRIBE to Next Media Animation: br 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.br br Facebook: Webpage: Twitter @nmatv: Tumblr: br 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.