Sen. Rand Paul Randal (Rand) Howard PaulSecond GOP senator to quarantine after exposure to coronavirus GOP senator to quarantine after coronavirus exposure The Hill's Morning Report - Sponsored by National Industries for the Blind - Trump seeks to flip 'Rage' narrative; Dems block COVID-19 bill MORE (R-Ky.) announced Thursday that he will oppose a House plan to fund the government, as the bill appears all but dead in the Senate.

“I’ll be a 'no' vote because I’m not going to continue to put the country further into debt,” Paul said on Fox News’s “Outnumbered Overtime.”

A spokesman for Paul confirmed that the Kentucky Republican is opposed to the measure.

Paul, a perennial "no" vote on continuing resolutions (CRs), is the third Republican to come out against the bill.

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But his defection leaves GOP leadership with no room for error if they want to get over a procedural hurdle to advance the House bill funding the government through mid-February.

With GOP Sens. Lindsey Graham Lindsey Olin GrahamMomentum growing among Republicans for Supreme Court vote before Election Day Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Warning signs flash for Lindsey Graham in South Carolina MORE (S.C.) and Mike Rounds Marion (Mike) Michael RoundsChamber of Commerce endorses McSally for reelection Senate GOP eyes early exit Senate Republicans signal openness to working with Biden MORE (S.D.) already opposed to the bill, Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellMomentum growing among Republicans for Supreme Court vote before Election Day Trump expects to nominate woman to replace Ginsburg next week Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral MORE (R-Ky.) will have to win over the 12 remaining undecided Democrats.

He'll also need to keep the rest of his caucus on board.

Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden Maybe they just don't like cowboys: The president is successful, some just don't like his style MORE (R-Ariz.) said after a party lunch that he is still examining the bill. Sen. Mike Lee Michael (Mike) Shumway LeeMcConnell shores up GOP support for coronavirus package McConnell tries to unify GOP Davis: The Hall of Shame for GOP senators who remain silent on Donald Trump MORE (R-Utah) frequently votes against spending measures, but hasn't officially come out against the House CR.

The growing opposition to the House plan — which funds the government through mid-February and includes a six year extension of the Children's Health Insurance Program (CHIP) — comes as senators in both parties are pitching a days-long extension as a backup plan.

The idea would be to give negotiators more time to reach a larger budget and immigration deal.

But GOP leadership appears at least publicly opposed to the effort.

"No contingency plans at all. If Democrats want to shut down the government and vote against the Children's Health Insurance Program they can do it. But it makes no sense to me," Sen. John Cornyn John CornynCalls grow for Biden to expand election map in final sprint Bipartisan praise pours in after Ginsburg's death Chamber of Commerce endorses McSally for reelection MORE (R-Texas) told reporters.

Leaving a GOP lunch, senators said they were waiting to see what could pass the House, which is expected to vote on its plan this evening, but didn't use a closed-door lunch to discuss backup plans.