It looks like the Obama campaign has found the 2004 Bill Clinton appearance in support of Kerry--the one Azizi has brought to our attention-- in which Clinton says if one candidate is urging you to hope and another to fear, you'd better support the one urging hope. And this is of course one of "Clinton's laws of politics".

So the Obama campaign now has an ad consisting of exactly this clip of Bill on hope vs fear---and then the Obama logo. I've seen the ad.

Perfect.