According to Congressional Quarterly, the Senate Democratic alternative on Iraq will be whatever gets a few Republican votes:
Armed Services Chairman
Carl Levin, D-Mich., said Wednesday the legislation he is drafting would include three elements: a drawdown of troops, a transition to new missions — force protection, training, counterterrorism — and a deadline for completion of the transition and withdrawal. Whether the latter is a goal or a hard date will be determined by how many Republicans he can attract, Levin said.
Do you want a date-certain for withdrawal? Tax credits to encourage troops to leave? Talk to Levin; he may have a plan you'll back.