Normally I wouldn’t mention what looks to be an obvious email fabrication, but I’ve received several emails (you may have too) alleging that a high ranking DNC official (of course) leaked that Senator Joe Biden will cite health concerns, possibly related to an another aneurysm, as his reason for stepping down as the vice-presidential candidate on the Democratic ticket, to be replaced by Senator Hillary Clinton soon after the VP debate.
Such email rumors aren’t uncommon; remember the one in 2004 claiming Bush was about to dump Dick Cheney? And more recently, that McCain was about to replace Sarah Palin? In fact, there hasn’t been such a swap since McGovern did it in 1972 (with disastrous results).
I know, anything’s possible, but I wouldn’t put much stock in the idea. The Dems probably realize that whatever boost they might enjoy with a switch to Clinton could be offset by making Obama seem a weak, indecisive, vacillating presidential candidate.