Rep. Mike Kelly (R-Pa.) on Saturday, Oct. 24, called on Democratic presidential nominee Joe Biden to apologize for calling President Donald Trump’s supporters “chumps.”

“Joe Biden should apologize for insulting millions of Pennsylvanians who support [President] Donald Trump,” Kelly wrote. “I’m proud to be one of those “chumps” (deplorables?) who will choose to Make America Great Again over the Biden/Harris socialist agenda.”

Biden on Saturday held a drive-in rally in Bristol, Pennsylvania, north of Philadelphia, which quickly turned into a Trump rally after the president’s supporters swarmed the area.

During his speech, Biden referenced supporters of President Trump gathering outside the event, calling them “chumps.”

“By the way, we don’t do things like those chumps out there with the microphone are doing, the Trump guys,” said Biden. “Look, we’ve got to come together.”

“I’ll work as hard for those who don’t support me as those who do, including those chumps at the microphone out there,” he added. “That’s the job of a president, the duty to care for everyone. The duty to heal.”

Biden has come under fire in Pennsylvania, a hub for natural gas production, for his stance on fracking. He recently falsely claimed on TV that the Boilermakers Union in Pennsylvania “overwhelmingly endorsed” him while they actually endorsed President Trump. 

Boilermaker trustee Shawn Steffee told the Washington Free Beacon that there was “a moment of disbelief when our members started blowing our phone up because they said we flip-flopped on our endorsement.”

“Nobody from his staff—nobody—has ever spoken with us, so I don’t know where he’s coming up with that,” Steffee added.

During the final presidential debate, Biden said he wanted to transition away from the oil industry, prompting some Democrats in oil-rich states to distance themselves from him.

Biden’s comments “fail to address the complexity of our energy needs and plan for our future,” Rep. Lizzie Fletcher (D-Texas), running for re-election in Houston the capital of the U.S. oil industry said.