Donald Trump refused to say he would accept the election results during the final 2016 presidential debate Wednesday, continuing to suggest without evidence that the election might be rigged.

“I will look at it at the time,” he said. “I will keep you in suspense.”

Trump has ramped up accusations in the past week that the presidential election will be rigged, presenting without evidence a claim that undermines the legitimacy of the democratic process. Election officials and members of both parties have condemned and dismissed Trump’s claims.

President Obama on Tuesday called them “irresponsible” and “unprecedented.” Asked on Wednesday whether her father would concede if he loses, Ivanka Trump said he would accept the outcome either way. Earlier this week, Trump’s running mate, Mike Pence, said, “We will absolutely accept the result of the election.”