The 8 Republicans who voted to curb Trump's Iran war powers

Eight Senate Republicans voted Thursday for a resolution that would curb President TrumpDonald John TrumpDeSantis on Florida schools reopening: 'If you can do Walmart,' then 'we absolutely can do schools' NYT editorial board calls for the reopening of schools with help from federal government's 'checkbook' Mueller pens WaPo op-ed: Roger Stone 'remains a convicted felon, and rightly so' MORE’s ability to take military action against Iran without congressional approval.

The Senate passed the resolution in a 55-45 vote, sending it to the House, where Speaker Nancy PelosiNancy PelosiAs coronavirus surges, Trump tries to dismantle healthcare for millions Sunday shows preview: Coronavirus poses questions about school safety; Trump commutes Roger Stone sentence Pelosi plans legislation to limit pardons, commutations after Roger Stone move MORE (D-Calif.) has said the measure will come up for a vote after lawmakers return from next week's recess.

The resolution requires Trump to remove U.S. troops against hostilities against Iran unless Congress authorizes military action. Tensions between Washington and Tehran escalated earlier this year in the wake of airstrikes that killed Iranian Gen. Qassem Soleimani.

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The measure garnered support from every Democrat, including the chamber's three 2020 contenders who returned from the trail for the vote. It also won over twice as many Republicans—included libertarian-minded senators to moderates—comparedd a failed effort in June to block Trump from using funding to carry out military action against Iran.

Here are the eight GOP senators who voted to rein in Trump’s war authority:

Sen. Lamar AlexanderAndrew (Lamar) Lamar AlexanderRepublicans considering an outdoor stadium for Florida convention: report Sixth GOP senator unlikely to attend Republican convention Coronavirus Report: The Hill's Steve Clemons interviews Randi Weingarten MORE (Tenn.): Alexander, a Senate institutionalist who is retiring, opposed the June proposal to block Trump from using funding, but has also broken with Trump on significant votes including supporting nixing the border wall emergency declaration. He said after the vote that it was "about the United States Constitution."

"It preserves the commander in chief’s Article II constitutional responsibility to defend the country and Congress’ Article I responsibility to declare war," he added.

Sen. Bill CassidyWilliam (Bill) Morgan CassidyKoch-backed group urges Senate to oppose 'bailouts' of states in new ads How will American cities avoid economic catastrophe? Why drug costs for older Americans should be capped in pandemic's wake MORE (La.): Cassidy was one of eight Republicans who voted to take up the resolution earlier this week. He declined to say earlier Thursday if he would support it on final passage, saying that he wanted to see how it would be amended but noted his support on the procedural vote.

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Sen. Susan CollinsSusan Margaret CollinsMore Republicans should support crisis aid for the Postal Service GOP senators voice confidence over uphill Senate battle Republicans considering an outdoor stadium for Florida convention: report MORE (Maine): Collins, who is up for reelection, was one of four Republicans who also voted to block Trump from using funding to take military action against Iran.

She positioned her support as about reclaiming Congress's constitutional authorities, telling reporters that it's "important to reassert the legislative branch’s role regardless of which party occupies the Whie House."

Sen. Mike LeeMichael (Mike) Shumway LeeKoch-backed group urges Senate to oppose 'bailouts' of states in new ads Gianforte halts in-person campaigning after wife, running mate attend event with Guilfoyle Sunday shows preview: Lawmakers to address alarming spike in coronavirus cases MORE (Utah): Lee, a libertarian-leaning Republican, has been at the center of the chamber's debates over Congress's war authority. He announced after a closed-door briefing with the administration that he would support Kaine's resolution, calling the meeting "the worst briefing I've seen, at least on a military issue."

Sen. Jerry MoranGerald (Jerry) MoranSenate GOP hedges on attending Trump's convention amid coronavirus uptick Watchdog accuses Commerce of holding up 'Sharpiegate' probe report Senate Democrats push federal agencies to combat coronavirus scams and robocalls MORE (Kan.): Moran was viewed as a potential swing vote on the war powers resolution. He voted against the June amendment to block funding for military action against Iran, but has also supported previous war powers resolutions targeting the Saudi-led military campaign in Yemen.

He said in a statement after the vote that any military action against Iran "ought to be considered by the full Congress on behalf of the people it represents."

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Sen. Lisa MurkowskiLisa Ann MurkowskiSixth GOP senator unlikely to attend Republican convention Koch-backed group urges Senate to oppose 'bailouts' of states in new ads The Hill's Morning Report - Presented by Facebook - Trump backs another T stimulus, urges governors to reopen schools MORE (Alaska): Murkowski had indicated last month that she was a likely no vote, telling an Alaska radio station that she was "hesitant to sign on to it for a host of different reasons.”

But Murkowski hinted that she could be changing her mind, telling reporters last week during the impeachment trial that Congress needed to "wake up" and become more assertive and noted that there was a war powers debate coming up.

She said as recently as Tuesday that she had not made a decision on Kaine's resolution, which underwent revisions since its introduction.

Sen. Rand PaulRandal (Rand) Howard PaulKoch-backed group urges Senate to oppose 'bailouts' of states in new ads How conservative conspiracy theories are deepening America's political divide Gianforte halts in-person campaigning after wife, running mate attend event with Guilfoyle MORE (Ky.): Paul is viewed as an outlier within the Senate GOP caucus when it comes to foreign policy and, like Lee, routinely teams up with Democrats on war powers resolutions. He announced with Lee after the closed-door briefing last month on the Soleimani strike that he would  support Kaine's resolution, noting he had been waiting to see the administration's intelligence before finalizing his decision.

Sen. Todd YoungTodd Christopher YoungA renewed emphasis on research and development funding is needed from the government Senate Republicans defend Trump's response on Russian bounties Stronger patent rights would help promote US technological leadership MORE (Ind.): Young signed onto the resolution after Kaine made changes to the proposal, including removing references to Trump in the "findings" section. He said on Thursday that he supports the Soleimani strike but that Congress has been "AWOL" on national security in recent decades.