Tally so far (will be updated--so refresh):

Interesting supporters of cloture: Hutchison, Webb, Collins, Martinez, Brownback, Bennett, Coleman, Craig, Domenici (?)

Interesting opponents: Byrd, Voinovich, Stevens, Dorgan, Gregg, Tester, Murkowski, Conrad, Specter, Graham, Warner; Domenici switches?

These votes are flying everywhere! But (as of 12:50 EST), cloture seems to be fighting uphill...

Cloture fails 52-44

UPDATE: Those who are interested can check out some excerpts from the Bush administration's statement against the DREAM Act here.