Sen. Tim Kaine Timothy (Tim) Michael KaineBiden promises Democratic senators help in battleground states Second GOP senator to quarantine after exposure to coronavirus The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep MORE (D-Va.) on Tuesday said he has majority support for his resolution aimed at reining in President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE’s war powers against Iran after making changes to win Republican votes.

“I’ve got 51 declared votes on version two,” Kaine told reporters, adding there are “more considering getting on board.”

Republican Sens. 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 (Ky.) and 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 (Utah) previously announced support for Kaine’s resolution. Sen. Todd Young Todd Christopher YoungSenate GOP eyes early exit Why the US should rely more on strategy, not sanctions Davis: The Hall of Shame for GOP senators who remain silent on Donald Trump MORE (R-Ind.) also said Tuesday he supported the amended version of Kaine’s measure.

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Kaine said the fourth Republican vote would come from Sen. Susan Collins Susan Margaret CollinsThe Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally Gideon leads Collins by 12 points in Maine Senate race: poll Senate leaders quash talk of rank-and-file COVID-19 deal MORE (R-Maine). With every Democrat expected to support the measure, four Republican votes give it the simple majority needed to pass.

In a procedural hurdle, though, Young said he wouldn’t vote for a motion to proceed on Kaine’s original resolution — which Kaine can force a vote on this week and then could have amended on the floor to the second version.

But Kaine said he is not likely to force a vote on the original resolution.

“I’m not likely to force a vote on Kaine one because I’ve got the votes on Kaine two and not on Kaine one,” he said. “And I do think there’s something virtuous about bringing up the bipartisan version.”

That means Kaine will have to wait to force the vote until the second version ripens, which is 10 days after he introduced it last Thursday. That means Jan. 21 is the earliest Democrats can force a vote on the measure.

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That’s the same day the Senate is expected to begin its impeachment trial of Trump. Kaine said it was possible there will be an agreement to consider the resolution before then, but also said he expects to be able to conduct the trial and consider the war powers resolution simultaneously.

“It’s widely understood that we will be doing other stuff during impeachment,” Kaine said. “The nice thing is [Senate Majority] Leader [Mitch] McConnell [R-Ky.] and [Sen. John] Cornyn [R-Texas] and [Senate Minority Leader Charles] Schumer [D-N.Y.] have also said we’re going to be taking up the Kaine war powers resolution soon.”

Kaine’s changes include removing two paragraphs in the "findings" section that directly mention Trump over concerns from Republicans and some Democrats that it was too political.

Kaine has also said he was working in some of the language from a House-passed war powers resolution into his, specifically changing his wording about removing troops to the lower chamber's use of “termination of the use of U.S. armed forces” in hostilities against Iran after some colleagues raised concerns that “removing” suggested a pullback of U.S. troops from the region.