Actor Wayne Knight, who played the malicious mailman Newman on "Seinfeld," is starring in a new ad by a Democratic super PAC slamming what he calls President TrumpDonald John TrumpBiden says GOP senators have called to congratulate him Biden: Trump attending inauguration is 'of consequence' to the country Biden says family will avoid business conflicts MORE's "systematic, premeditated assault on the U.S. mail" in the wake of highly controversial recent changes to the U.S. Postal Service.

"They had the unmitigated gall to try to slow down the mail," alleges Knight, appearing to speak as Newman. "When everyone knows the only person who can slow down the mail is a mailman."

Knight, 65, then chomps down on a turkey drumstick while charging the Trump administration is intentionally attempting to stymie mail-in voting.

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“They’ve shortened working hours,” he argues. “They’ve got missing mailboxes. They’re decommissioning sweet, sweet sorting machines to try to delay voting by mail.”

“And it’s not just your mail-in ballots you gotta worry about,” Knight adds. “Oh, no, no, no. You gotta worry about your grandma’s blood pressure medicine.”

The super PAC behind the ad, PACRONYM, bills itself as "the largest digital super PAC working to get Trump out of the White House."

The president told Fox Business Network’s “Mornings with Maria" on Thursday that mail-in ballots could be "a much bigger problem than China or Russia."

“There’s thousands of ballots right there, you pick up any paper in the country practically and they’re cheating all over the place with the ballots, so how is that not a problem? That’s a much bigger problem than China or Russia, if you look at it, it’s a much bigger problem,” Trump told anchor Maria BartiromoMaria Sara BartiromoWisconsin formally declares Biden won election following recount GOP lawmaker says he's been called a 'traitor' by people close to him for recognizing Biden win Pa. lawmaker was informed of positive coronavirus test while meeting with Trump: report MORE in a phone interview.