WASHINGTON — Top congressional leaders are nearing agreement on a long-delayed COVID-19 relief package, hoping to seal a deal as early as Wednesday that would extend aid to individuals and businesses and help ship coronavirus vaccines to millions.

Sen. Joe Manchin, D-W.Va., a coauthor of a $908 billion bipartisan package, said leadership negotiators are close to agreement on legislation that would extend direct payments of perhaps $600 to most Americans. No. 2 Senate Republican John Thune of South Dakota confirmed the likely addition of direct payments in that range, as well as a $300-per-week bonus federal unemployment benefit to partially replace a $600-per-week benefit that expired this summer.

“We made major headway toward hammering out a bipartisan relief package,” said Senate Majority Leader Mitch McConnell, R-Ky.

The bill would include a new round of stimulus checks, enhanced federal unemployment insurance benefits, and other avenues for delivering aid to states, localities, territories and tribes, according to two people familiar with the talks and authorized to characterize them. Their statement said that a GOP-sought provision shielding businesses from COVID-19-related lawsuits would be dropped.

“I think they’re basically now putting it all together,” Manchin told CNN. “We were able to break the gridlock.”

Other aides following the talks offered more cautious assessments. The emerging package is serving as a magnet for add-ons and the two sides continue to swap offers.

It is also apparent that another temporary spending bill will be needed to prevent a government shutdown at midnight on Friday. That is likely to easily pass.

Negotiations Intensified on Tuesday After Months of Futility

House lawmakers were returning to Washington Wednesday in hopes of a vote soon on the emerging package, which would combine the $900 billion in COVID-19 relief with a $1.4 trillion governmentwide funding bill and a host of other remaining congressional business.

Negotiations intensified on Tuesday after months of futility. The top Democratic and Republican leaders of Congress met twice in hopes of finally cementing a leadership agreement that would revive subsidies for businesses hit hard by the pandemic, help distribute new coronavirus vaccines, fund schools and renew soon-to-expire jobless benefits.

Republicans labored to keep the price tag for the long-delayed rescue package in check, seeking to prevail in a battle over help for state and local governments, while capping the cost of bonus jobless benefits and direct payments sought by Democrats.

After two meetings in House Speaker Nancy Pelosi’s Capitol suite, where Democrats pressed for more generous steps such as direct payments of to help individuals struggling in the COVID-19 economy, House Minority Leader Kevin McCarthy, R-Calif., gave an upbeat assessment.

“I think we’ve built a lot of trust,” McCarthy said. “I think we’re moving in the right direction. I think there’s a possibility of getting it done.”

Pressure for a deal is intense. Unemployment benefits run out Dec. 26 for more than 10 million people. Many businesses are barely hanging on after nine months of the pandemic. And money is needed to distribute new vaccines that are finally offering hope for returning the country to normal.

Pelosi Has Insisted for Months That State and Local Aid Would Be in Any Final Bill

McConnell is playing a strong hand in the lame-duck session and pushed hard to get Democrats to drop a much-sought $160 billion state and local government aid package. Several senior Democrats, including close allies of President-elect Joe Biden — who is eager for an agreement — have said they would go along now and fight for the aid next year. Democrats cited other gains for states and localities in the emerging deal such as help for transit systems and vaccine distribution.

Pelosi has insisted for months that state and local aid would be in any final bill, but as time is running out, Democrats appear unwilling to hold the rest of the package hostage over the demand.

Manchin is an architect of a bipartisan $748 billion aid package that is aimed at serving as a template for the leadership talks. President Donald Trump’s chief negotiator, Treasury Secretary Steven Mnuchin, supports a package with many similar elements. There is also bipartisan support for transportation and transit assistance, funding for rural internet service and help for the Postal Service, among other provisions.

There’s a hoped-for deadline of midnight Friday to deliver the completed package to Trump. That is when a partial government shutdown would arrive with the expiration of last week’s temporary funding bill. But there’s no guarantee that the massive yearend measure will be completed in time. If the talks drag, further temporary bills could be needed.

Negotiations on a $1.4 trillion catchall spending bill are virtually completed, lawmakers say, One hard-fought compromise would deliver another $1.4 billion or so for a final installment to continue construction of his long-sought U.S.-Mexico border wall.

The post-election lame-duck session is the last chance to wrap up the unfinished work this year, a goal of all involved, though they have been slow until now to forge the often-tricky compromises required to pull the measure together.