The war of words between Sen. Joe ManchinJoe ManchinPressure grows for breakthrough in Biden agenda talks Climate activists target Manchin Hoyer signals House vote on bill to 'remove' debt limit threat MORE (D-W.Va.) and Vice President Pence intensified Thursday, with Manchin saying Pence's attacks against him prove the Trump administration isn't actually interested in reaching across the aisle.

"My record speaks for itself. If they’re attacking people like me then they don't want bipartisanship. They are not committed or sincere about making government work," he said. 

Manchin, viewed as one of the Senate's most moderate senators, noted that he's voted with the Trump administration 54 percent of the time and "there isn’t another person in Congress who votes as bipartisan as I do."

"For Mike PenceMichael (Mike) Richard PenceBennie Thompson not ruling out subpoenaing Trump Heritage Foundation names new president Fewer than 4 in 10 say US is on right track: poll MORE to come in yesterday [and] start firing shots is not leadership. I’d simply urge Mr. Pence to show better leadership qualities," Manchin said on Thursday in a string of tweets. 

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Manchin's latest statement comes after Pence told Politico, in an interview that ran on Thursday morning, that he would campaign against Sen. Joe DonnellyJoseph (Joe) Simon DonnellyBiden to have audience with pope, attend G20 summit Biden taps former Indiana Sen. Donnelly as ambassador to Vatican Republicans may regret restricting reproductive rights MORE (D-Ind.).

"We’re going to spend a fair amount of time in the states that the president carried very strongly — Indiana being one of them, West Virginia here being another, places like Montana, elsewhere around the country we think represent a real opportunity for us,” he told the publication

Manchin, Donnelly and Sen. Jon TesterJonathan (Jon) TesterSenate to vote next week on Freedom to Vote Act Democrats struggle to gain steam on Biden spending plan The Hill's 12:30 Report: Debt ceiling fight punted to December MORE (D-Mont.) are one of 10 Democrats up for reelection in states won by Trump in 2016. Trump won West Virginia by more than 40 percentage points, and Indiana and Montana by roughly 20 percentage points. 
 
The two men also traded rhetorical volleys on Wednesday after Pence tweeted from his White House account that he urged Manchin to support the GOP tax plan "but #JoeVotedNo."
  
 
Manchin — who said on Wednesday night that Pence's comments are part of "why Washington sucks"— added on Thursday that Pence and his team decided for the tax bill to be "strictly partisan" and tried to take health care away from roughly 200,000 West Virginians. 
 
"Mike Pence talks a good game as far as bipartisanship but I met with their team 21 times to make tax cuts larger [and] permanent for the middle class, not big businesses and millionaires. They decided to be strictly partisan instead of helping the middle class West Virginians," he said in a tweet. 
 
The verbal scuffle comes as Manchin has worked to pitch himself as a bridge between his party and President TrumpDonald TrumpMcAuliffe takes tougher stance on Democrats in Washington Democrats troll Trump over Virginia governor's race Tom Glavine, Ric Flair, Doug Flutie to join Trump for Herschel Walker event MORE since the former business mogul won the White House in 2016. 
 
He's touted his relationship with Trump and was reportedly considered for a Cabinet position. 
 
Manchin noted on Thursday that the president called him last week and invited him to the White House "to talk about ways we can work together on immigration reform."