There's a "major push to disinvite Palin, if Obama/Biden don't attend," the source says.
Via Allahpundit. I think that it's pretty clear now precisely why Clinton dropped this event, isn't it? One way or the other, it leads back to the Obama campaign - because there's no reason besides mere political partisanship to push getting Palin off the podium. I suppose that this is more "post-partisanship" on the Democrats' part, which is apparently defined as "partisanship so entrenched that it's been literally pounded into the ground."
Not to go all New Jersey on you folks, but: Oy.
PS: Oh, yes. Sarah's response:
"Governor Palin believes that the danger of a nuclear Iran is greater than party or politics. She hopes that all parties can rally together in opposition to this grave threat," says spokeswoman Tracey Schmitt.
Translation: she can be disinvited, but be damned if she'll be scared away.