Sen. Joe Manchin Joseph (Joe) ManchinNames to watch as Trump picks Ginsburg replacement on Supreme Court Momentum growing among Republicans for Supreme Court vote before Election Day Gardner on court vacancy: Country needs to mourn Ginsburg 'before the politics begin' MORE (D-W.Va.) is quashing speculation that he'll leave the Senate to become President Trump's Energy secretary.

The Democratic senator, who is facing a tough 2018 reelection bid, said at a town hall that he would not be jumping to the Trump administration.

.@Sen_JoeManchin tells town hall crowd "that's not going to happen" re speculation that he might join Trump's cabinet as Energy Secretary. — Clare Foran (@ckmarie) August 18, 2017

Joe Manchin opens town hall by saying he won't be joining Trump administration -- gets cheers. Says he wants to work with Trump as senator pic.twitter.com/mdGlXGTY73 — Natalie Andrews (@nataliewsj) August 18, 2017

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Jonathan Kott, a spokesman for Manchin, confirmed the Democratic senator said at the town hall that he would not be Trump's next Energy secretary.

White House and GOP officials floated Manchin as a potential pick to lead the Energy Department as part of a strategy to get Republicans a 50th vote on repealing and replacing ObamaCare.

The move would let West Virginia Gov. Jim Justice, a former Democrat who earlier this month switched to the GOP, appoint a Republican to replace Manchin in the Senate.

Under the scenario, current Energy Secretary Rick Perry Rick PerryOVERNIGHT ENERGY: Democrats push resolution to battle climate change, sluggish economy and racial injustice | Senators reach compromise on greenhouse gas amendment stalling energy bill | Trump courts Florida voters with offshore drilling moratorium OVERNIGHT ENERGY: Trump signs major conservation bill into law | Senate votes to confirm Energy's No. 2 official | Trump Jr. expresses opposition to Pebble Mine project Senate votes to confirm Energy's No. 2 official MORE would be appointed to lead the Department of Homeland Security. Manchin, in turn, would be named to lead the Department of Energy.

Republicans, who have a 52-seat majority, fell one vote short in their bid to pass a "skinny" bill to repeal parts of ObamaCare. The repeal effort is sidelined unless they can flip GOP Sens. John McCain John Sidney McCainMomentum growing among Republicans for Supreme Court vote before Election Day McConnell urges GOP senators to 'keep your powder dry' on Supreme Court vacancy McSally says current Senate should vote on Trump nominee MORE (Ariz.), Susan Collins Susan Margaret CollinsMcConnell locks down key GOP votes in Supreme Court fight Most Americans think winner of election should pick next Supreme Court justice: poll Murkowski: Supreme Court nominee should not be taken up before election MORE (Maine) or Lisa Murkowski Lisa Ann MurkowskiMcConnell locks down key GOP votes in Supreme Court fight Most Americans think winner of election should pick next Supreme Court justice: poll Murkowski: Supreme Court nominee should not be taken up before election MORE (Alaska), or find a way to expand their majority.

Manchin was reportedly considered for the job after Trump's election in November, but Trump eventually nominated Perry to the post.