As the Senate barrels toward the third government funding deadline of the year, Republicans appear in the dark about one key question: What will 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.) do?

The libertarian-minded senator caused an hours-long shutdown in February. He's yet to say if he'll give a repeat performance going into the midnight Friday deadline to avoid a partial closure.

"Shame, shame. A pox on both Houses — and parties. $1.3 trillion. Busts budget caps. 2200 pages, with just hours to try to read it," he tweeted on Thursday.

Shame, shame. A pox on both Houses - and parties. $1.3 trillion. Busts budget caps. 2200 pages, with just hours to try to read it. — Senator Rand Paul (@RandPaul) March 22, 2018

Republican leadership wants to pass the omnibus funding bill Thursday, but senators acknowledged that timeline all comes down to Paul, and they appear to have no idea what he is going to do.

Senate Majority Whip John Cornyn John CornynTumultuous court battle upends fight for Senate Texas Democrats roll out first wave of planned digital ads as Election Day nears Calls grow for Biden to expand election map in final sprint MORE (R-Texas) noted he has not spoken to Paul but predicted with a smile: "He'll speak up."

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"I think people realize the handwriting is on the wall," he said. "I just figured I would let him speak up if he wants to speak, and if he doesn't we'll vote."

Asked about the chamber's timeline for voting, Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellGraham: GOP will confirm Trump's Supreme Court nominee before the election Trump puts Supreme Court fight at center of Ohio rally The Memo: Dems face balancing act on SCOTUS fight MORE (R-Ky.) added, "Whenever Sen. Paul decides we can."

Under the Senate's rules the earliest the Senate could hold an initial vote would be early Saturday morning — roughly an hour after the midnight deadline to avoid a partial government closure.

Sen. John Kennedy John Neely KennedyMORE (R-La.) signaled earlier Thursday that he was undecided on whether he would let the chamber speed up votes. He said after a closed-door caucus lunch that he wouldn't delay the bill.

"I'm not going to try to delay it out of respect for my colleagues," he said.

Republican senators said Paul's plan did not come up during the lunch, which was largely a tribute to retiring Sen. Thad Cochran William (Thad) Thad CochranEspy wins Mississippi Senate Democratic primary Bottom Line Mike Espy announces Mississippi Senate bid MORE (R-Miss.).

"There are a lot of people who are going to put pressure on him," said Sen. David Perdue (R-Ga.).

Asked if there was an effort to "prevail" on Paul, he added: "There always is. I'm not being cute. I think there always is an effort. ... There's no benefit to waiting at this point."

Sen. Richard Shelby Richard Craig ShelbySenate GOP eyes early exit Dems discussing government funding bill into February GOP short of votes on Trump's controversial Fed pick MORE (R-Ala.), asked if the Senate would be able to vote on Thursday, pointed to the Kentucky senator.

"Have y’all spoken to Sen. Paul?" he asked reporters. "Felt his pulse?”