crucial cancer test for women. curvel is cancer screening, not just mammograms. a reality check from nbc s bob bazell. also this hour, senate armed services chairman carl levin on the 9/11 terror trial. good day, i m andrea mitchell live in washington. ben nelson is making it clear that his vote tomorrow night is to move the senate health bill to the floor for debate. he will not obstruct and it is not a vote, though, against the bill or for the bill. nbc kelly oo donnell is live on capitol hill. we re talking procedure here, but a crucial test. there s so much symbolism to this, andrea. the distinction you just made is one that ben nelson wants to make clear, especially to the people back in nebraska. he wants to give harry reid and his democratic colleagues a chance to get this debate going. so many of them feel so much more strongly in fairve of this than we think ben nelson does right now. but he did not want to stand in the way of the debate. what happens next, ass