The Senate voted late Tuesday to reject an amendment to a military appropriations bill that would have removed provisions from the bill that called for a US withdrawal from Iraq by March 2008.
By a vote of 50-48, the Senate defeated the GOP-led efforts to remove the timeline from the $122 billion appropriations bill.
The AP reports that the vote fell largely along party lines. Sen. Lieberman, an Independent who caucuses with the Democrats, voted with the GOP in favor of the defeated amendment.
The Senate bill parallels a similar measure passed last week in the House, which bundles defense appropriations for Iraq and Afghanistan with a timeline for withdrawal from Iraq. The bill also includes approximately $20 billion dollars in domestic spending.
Meanwhile, on Tuesday the White House issued another threat to veto any legislation that includes a withdrawal timetable.
The final vote on the Senate bill is expected to be very slim, and will depend on the exercise of party discipline. Senate Republicans have signaled that they would not use parliamentary tactics to prevent the bill from reaching a vote, as they have with other Iraq-related bills in the past.