50

Updating this count, Hugh Hewitt puts John Warner in the good column (well, good for Democrats):

McCain, Chafee and Warner appear to have defected, and Snowe of Maine is thought to be a lost cause as well, though the threat to her re-election that defection in this crucial issue would bring might yet garner her vote.

Judging from Hagel's speech this Sunday, I've got him voting against it as well.

That leaves Collins (ME), Sununu (NH), Gregg (NH), and Lugar (IN) as the main targets for 51.

If for some reason you haven't contacted your Senator already, give them a call now and express your outrage at the idea of overturning the filibuster, or thank them for being on your side.

It's a fight that comes closer to victory everyday.