By Kaia Hubbard

Copyright cbsnews

The Senate is returning to Washington Tuesday afternoon and is expected to hold a procedural vote in the evening on a House-passed measure to fund the government, trying again to end the impasse after the bill repeatedly fell short of the 60 votes needed last week.

Republicans have attempted to peel off enough Democrats to push through a House-passed measure to keep the government funded until Nov. 21. But they’ve been unable to pick up any new support from Democrats since just before the shutdown began. In the Senate, 60 votes are needed to advance most measures, and with only 53 Republicans in the Senate, support from Democrats is essential.

Just one Democrat initially crossed the aisle to support the bill in a vote last month. But on the next vote on Sept. 30, two more joined Republicans. One Republican, Sen. Rand Paul of Kentucky, has consistently voted against the measure to fund the government. Five more Democrats are needed to advance the measure.

But Tuesday’s vote marks a change in approach: it’s the first time the chamber will take a vote on the legislation that passed the House without also voting on a competing measure from Democrats. The Democrats’ bill would fund the government until Oct. 31 and includes an extension of the expiring health insurance tax credits.