UPDATE: We’ve posted a full story on today’s vote here.

The Defense Authorization Act containing a repeal of “don’t ask don’t tell” is one of three bills scheduled for a cloture vote in the Senate beginning at 11 a.m. Eastern time, or 10 a.m. Dallas time, on Thursday, according to a Senate calendar released Wednesday night. The first of the three bills scheduled for a cloture vote is the DREAM Act, which passed the House on Wednesday but is not believed to have enough votes to overcome a filibuster in the Senate. As for the Defense bill with DADT repeal attached, all eyes will be on Maine Republican Sen. Susan Collins, whose misgivings prompted Majority Leader Harry Reid to postpone a planned vote Wednesday evening. Read Collins’ statement from last night here. Below are the Senate orders for today via AmericaBlog:

∙The Senate will convene at 9:30am and proceed to consideration of the motion to proceed to the Development, Relief, and Education for Alien Minors (DREAM) Act of 2010 (S.3992), with ten minutes reserved for Senator Durbin, and the remaining time until 11:00am equally divided and controlled between the two Leaders, or their designees.

∙At 11:00am, the Senate will proceed to a series of up to three roll call votes on the following:

o The motion to invoke cloture on the motion to proceed to the Development, Relief, and Education for Alien Minors (DREAM) Act of 2010 (S.3992).

o The motion to invoke cloture on the motion to proceed to the James Zadroga 9/11 Health and Compensation Act of 2010 (H.R.847).

o Reconsideration of the motion to invoke cloture on the motion to proceed to Defense Authorization Act for Fiscal Year 2011 (S.3454).

UPDATE: As of 11:15 a.m. Dallas time, the Defense bill was on hold indefinitely as negotiations between Reid and Collins continued. However, the tax bill was expected to arrive on the Senate floor within an hour or so. The tax bill could delay consideration of the Defense bill, but it would also address one of Collins’ main concerns — that the tax bill be dealt with first.