Donald Trump has said the only way he can lose to his rival Hillary Clinton in the state of Pennsylvania is if the vote is rigged against him.


With the election three months away, a recent Quinnipiac poll indicated Mr Trump is trailing to Ms Clinton in Pennsylvania by 52 per cent to 42 per cent.


But, speaking at a rally in the state, Mr Trump said: “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.


“If you do that, we’re not going to lose. The only way we can lose, in my opinion, and I really mean this, Pennsylvania, is if cheating goes on. I really believe it.


“I looked over Pennsylvania and I’m studying it. And we have some great people here. Some great leaders here of the Republican Party, and they’re very concerned about that, and that’s the way we can lose the state, and we have to call up law enforcement, and we have to have the sheriffs and the police chiefs and everybody watching.”