Senate Minority Leader Mitch McConnell, R-Ky., arrives at the Capitol in Washington, Friday, March 5, 2021, as the Senate steers toward a voting marathon on the 1.9 trillion COVID-19 relief bill that's expected to end with the chamber's approval of the measure. (AP Photo/J. Scott Applewhite)
Senate Minority Leader Mitch McConnell, R-Ky., arrives at the Capitol in Washington, Friday, March 5, 2021, as the Senate steers toward a voting marathon on the 1.9 trillion COVID-19 relief bill that's expected to end with the chamber's approval of the measure. (AP Photo/J. Scott Applewhite) Credit: J. Scott Applewhite

WASHINGTON — Democrats agreed Friday to pare back emergency jobless benefits but extend them for an extra month, bidding to solidify support as the Senate approached a voting marathon on a $1.9 trillion COVID-19 relief bill.

The deal came as the chamber worked toward approving a final version of the massive package, probably over the weekend, of President Joe Biden’s top legislative priority. That would give the House time to approve the legislation and whisk it to Biden for his signature.

First, the Senate was preparing to vote on a mountain of amendments, mostly by GOP opponents. Virtually all are destined to fail but are designed to force Democrats to take politically awkward votes.

Among them, though, was a Democratic plan that was expected to pass that would trim the House bill’s $400 weekly emergency unemployment benefits.

Under the compromise, those payments — payable on top of regular state benefits — would be reduced to $300, but run an extra month through September. Taxes also would be reduced on unemployment benefits. A Senate Democratic aide provided details of the deal on condition of anonymity to describe private talks.

Biden and Senate leaders had agreed Wednesday to retain the House bill’s higher $400 version. The reduction to $300 seemed to reflect a need to secure support for the overall bill, particularly from moderate Democrats.

Republicans are attacking the bill as a liberal spend-fest that ignores that growing numbers of vaccinations and signs of a stirring economy suggest that the twin crises are easing.

“Our country is already set for a roaring recovery,” said Senate Minority Leader Mitch McConnell, R-Ky., in part citing an unexpectedly strong report on job creation. “Democrats inherited a tide that was already turning.”

Democrats reject that, citing the 10 million jobs the economy has lost during the pandemic and numerous people still struggling to buy food and pay rent.

“If you just look at a big number you say, ‘Oh, everything’s getting a little better,’” said Senate Majority Leader Chuck Schumer, D-N.Y. “It’s not for the lower half of America. It’s not.”

In an encouraging sign for Biden, a poll by The Associated Press-NORC Center for Public Affairs Research found that 70% of Americans support his handling of the pandemic, including a noteworthy 44% of Republicans.

Moments after the Senate took up the legislation Thursday, Sen. Ron Johnson, R-Wis., forced the chamber’s clerks to read aloud the entire 628-page measure. The exhausting task took the staffers 10 hours and 44 minutes and ended shortly after 2 a.m. EST, with Johnson alternately sitting at his desk and pacing around the mostly empty chamber.

Democratic leaders made more than a dozen late additions to their package on Thursday. That reflected their need to cement unanimous support from all their senators — plus Vice President Kamala Harris’ tie-breaking vote — to succeed in the precariously divided 50-50 chamber.

The Senate’s 51-50 vote to start debating the package, with Harris pushing Democrats over the top, underscored how they were navigating the package through Congress with virtually no margin for error. In the House their majority is a scrawny 10 votes.

The bill, aimed at battling the killer virus and nursing the staggered economy back to health, will provide direct payments of up to $1,400 to most Americans. There’s also money for COVID-19 vaccines and testing, aid to state and local governments, help for schools and the airline industry, tax breaks for lower-earners and families with children, and subsidies for health insurance.

The new provisions offered items appealing to all manner of Democrats. Progressives got money boosting feeding programs, federal subsidies for health care for workers who lose jobs, tax-free student loans, and money for public broadcasting and consumer protection investigations.

For everyone, there was money for infrastructure, cultural venues, start-up companies and afterschool programs.