West Virginia Sen. Joe ManchinJoseph (Joe) ManchinTrump administration seeks to use global aid for nuclear projects Shelley Moore Capito wins Senate primary West Virginia Gov. Jim Justice wins GOP gubernatorial primary MORE, one of the most conservative Democrats in the upper chamber, is poised to endorse former Vice President Joe BidenJoe BidenHillicon Valley: Biden calls on Facebook to change political speech rules | Dems demand hearings after Georgia election chaos | Microsoft stops selling facial recognition tech to police Trump finalizing executive order calling on police to use ‘force with compassion’ The Hill’s Campaign Report: Biden campaign goes on offensive against Facebook MORE in the general election. 

“I will, absolutely,” Manchin told Politico in a Thursday interview.

Manchin has been thinking about endorsing Biden since the South Carolina primary in March, where Biden took more than 48 percent of the vote in what was then a crowded primary. 

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Voters in West Virginia share similar concerns as those in South Carolina, where the energy sector carries the economy. Manchin didn’t endorse Obama’s campaign, and in 2016 he nearly took back his endorsement of Democratic nominee Hillary ClintonHillary Diane Rodham ClintonWhite House accuses Biden of pushing ‘conspiracy theories’ with Trump election claim Biden courts younger voters — who have been a weakness Trayvon Martin’s mother Sybrina Fulton qualifies to run for county commissioner in Florida MORE after she called for an end to coal mining. He was also one of a slew of Democratic senators who were vocally uncomfortable about the prospect of Sen. Bernie SandersBernie SandersThe Hill’s 12:30 Report: Milley apologizes for church photo-op Harris grapples with defund the police movement amid veep talk Biden courts younger voters — who have been a weakness MORE (I-Vt.) winning the nomination, according to the news outlet. 

“I’m just trying to make sure that we’re working through a plan,” he said. “I’ve been working and talking to different people. We’re definitely getting there. You just can’t leave people behind that did the heavy lifting and that’s worked hard, whether it’s producing coal or producing energy for this country. They just need an opportunity to live their lives and have that opportunity. And I think Joe Biden understands that.”

Manchin’s endorsement comes after Biden became the presumptive nominee following Sanders’s exit from the race. The West Virginia primary is scheduled for June, and though Sanders is no longer in the race, he is still hoping to gather enough delegates to garner some leverage and push Biden toward a more progressive platform at the Democratic National Convention. 

Sanders and Sen. Elizabeth WarrenElizabeth WarrenWarren, Democrats urge Trump to back down from veto threat over changing Confederate-named bases OVERNIGHT DEFENSE: Joint Chiefs chairman says he regrets participating in Trump photo-op | GOP senators back Joint Chiefs chairman who voiced regret over Trump photo-op | Senate panel approves 0B defense policy bill Trump on collision course with Congress over bases with Confederate names MORE (D-Mass.), a fellow progressive and former 2020 rival, endorsed Biden earlier this week. Former President Obama also endorsed his former vice president this week.