The U.S. Senate on Friday passed a stopgap spending bill, averting a partial government shutdown, after Democrats backed down in a standoff driven by anger over President Donald Trump's campaign to slash the federal workforce.

An afternoon vote was expected to clear the way for a Republican-written bill to keep government funding flowing past midnight after the top Senate Democrat said he would not block it.

After meeting with his conference, the Senate minority leader said "Republicans do not have the votes" to advance the House-approved measure, which requires 60 to pass.