The rally was at the packed Signature Flight Hangar. Ohio is a must-win, winner-take-all state, and the latest Quinnipiac poll shows Trump winning with 31 percent of likely voters. Gov. John Kasich is at 26 percent in that poll.
“These politicians are bad. They lie and lie. We don’t have to lie," Trump said, criticizing current politicians. He said the leaders of Mexico and China are too smart for our leaders.
New Jersey Gov. Chris Christie introduced Trump to the cheering crowd.
“Do you know when a Washington politician is lying? His lips are moving,” Christie said.
Trump's visit comes a day after another rally got out of hand in Virginia. Large groups of protesters interrupted him repeatedly, some chanting "black lives matter." Several protesters were removed from Tuesday's event.
The disruption came on a day when the New York billionaire was fending off criticism that he had not clearly condemned the support of the Ku Klux Klan in an interview on CNN Sunday.
Still, polls show Trump will consolidate his status as the favorite at the end of the day on Super Tuesday.
As soon as he finishes this rally, Trump is scheduled to head out for another one in Kentucky before ending Super Tuesday in Florida.