Can Joe Biden salvage the DNC?

With the important exception of Barack Obama's brilliant speech, the Democrats blew it on Wednesday night. Viewers of the third night of the Democratic National Convention were treated to a video about gun control that could have been produced a year ago, long before the current sharp spike in violent crime across the country. Another spot on climate change looked and sounded like part an ad campaign thrown together for an energy company shortly after an oil spill. As for the speeches, all but O