Speculation is coming back around to Tim Kaine again. Aside from anything else, putting a veep on the Dems' ticket with a last name that sounds almost exactly like the GOP nominee's is a genuinely disastrous marketing trainwreck. The last thing you want is to have your veep's name reinforce your opponent's brand—and the way Americans get their news (often as background noise, half-listened to) is a terrible environment into which to insert a Kaine to challenge a McCain. (That the Dems evidently haven't seriously considered this is scary.) Unlucky for Mr. Kaine, but there's no way he should get near the ticket for that reason alone.
I've had the thought this week that Obama could surprise us all and unveil Clinton as his running mate. That would be some seriously news cycle ownage.
McCain will reportedly name his running mate on Aug. 29. Which is also his 72nd birthday.