Donald Trump has highlighted what he calls a "rigged election" by underscoring the potential for widespread voter fraud, but he doesn't have a problem with voters who registered in multiple places voting for him.

"They say there's no voter fraud. Folks, it's a rigged system and it's a rigged election," he said during a rally Saturday night in Cleveland.

Trump cited figures from Pew Charitable Trusts that said there are 2.8 million people who are registered in more than one state. But Trump said it was fine if they vote for him.

"Maybe they'll vote for Trump, I don't know," Trump said. "I may be hurting myself. It's ok for them to do it."

Trump cited other figures from the Pew report, including that there are 24 million voter registrations that are either "invalid or significantly inaccurate."

"There are 1.8 million dead people that are registered right now to vote, and folks, some of them vote. I wonder how that happens," he added.

Trump was citing figures from a Pew report that was issued back in February 2012 that criticized the use of paper ballots, which the report describes as inefficient and costly.

The report didn't say that fraud was taking place, but noted that "the inability of this paper-based process to keep up with voters as they move or die can lead to problems with the rolls, including the perception that they lack integrity or could be susceptible to fraud."