President Donald Trump on Thursday defended a controversial ad from Ohio GOP gubernatorial candidate Vivek Ramaswamy featuring his Democratic opponent Amy Acton's estranged mother calling her daughter a "liar," with the president on social media calling it "powerful" and saying that he himself would run such an ad.

"Who wouldn't use such an Ad? I would, it's called, 'hitting pay dirt,'" Trump wrote in a social media post on Thursday afternoon.

Trump also said that Ramaswamy should keep the ad up -- despite several Republicans' calls to take it down.

President Donald Trump speaks with reporters before walking to board Marine One on the South Lawn of the White House, Oct. 22, 2026, in Washington.

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The president attacked those Republicans -- including GOP Ohio Gov.…