Okay, not quite a slam dunk. But Nate's analysis of the new Florida Quinnipiac poll does focus the mind a bit:

And then there is Florida, where Quinnipiac has Obama ahead by 4 points. Barack Obama has never before led a Florida poll -- not against John McCain, nor against Hillary Clinton -- so this is something of a watershed moment.

If Florida is in play, then John McCain's defense is completely broken; it was the one traditional swing state that always had looked off-limits to Obama. More frustratingly for McCain, he had spent the better part of three days in Florida earlier this month, hoping to raise doubts about Obama among Jewish voters. Although Quinnipiac does not break out the Jewish vote, Obama holds a 61-31 lead in Southeast Florida, where most of the state's Jewish population is concentrated.

For what it's worth, I talked to eight or so GOP operatives for my Pawlenty piece and brought up Lieberman's name almost every time. About half thought it was a lunatic idea, the other half thought it was a decent idea but still highly unlikely.

--Noam Scheiber