Some sites and polls say Biden clearly won (MSNBC, Huff Post, CBS Poll), and others say it was a draw (NBC and CNN commentators and CNN Poll). However, lets not forget the objectives of the evening for Biden: 1) Stop the Bleeding in terms of Momentum 2) Re-engage the base. Both were accomplished. This is a VP debate, the best Biden could do is stop the bleeding - and he did! The worst he could have done is flubbed it, and allowed another day or two of bad news.
Clearly, the worst Joe Biden will come out of this is a draw, and one of the key issues discussed (abortion) is critical to the group that Obama has seen the most slippage in the past week.
This debate (which is at worst a draw to a moderate win for Biden) will dominate the news cycle Friday. No one cares over the weekend. Once we get through to Monday, all the focus will be on the next debate, rather than last weeks debate. If O brings his A game, he (and we) win!