PITTSBURGH (KDKA) — Donald Trump boldly declared on Friday that if he loses in Pennsylvania, it will be because Hillary Clinton cheated.

“We’re going to watch Pennsylvania. Go down to certain areas and watch and study and make sure other people don’t come in and vote five times,” he said at a rally in Altoona. “If you do that, we’re not going to lose. The only way we can lose, in my opinion — I really mean this, Pennsylvania — is if cheating goes on.”

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He’s noted that he’s had huge turnout for rallies in the state as evidence of what he says is overwhelming support.

Trump said that Republican leaders in Pennsylvania are very concerned about the possibility of cheating. In 2014, a Pennsylvania judge struck down a law requiring voters to produce state-approved photo ID in order to vote.

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He went on to say, “We have to call up law enforcement, and we have to have the sheriffs and the police chiefs and everybody watching.”

Hillary Clinton’s lead in the polls in Pennsylvania is solid — a Quinnipiac survey of likely voters released Tuesday found Clinton leading Trump 52% to 42%.

But Trump insists that “the only way they can beat it, in my opinion — and I mean this 100% — if in certain sections of the state, they cheat.”

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Earlier in the day on Friday Trump made a campaign stop in Erie, where there he was greeted by another large crowd, calling President Obama “a terrible, terrible President.” He also toured a large manufacturing plant in Hollidaysburg.