"We ... need to keep the ballot box safe from illegal voting," Trump said at a party retreat in Philadelphia. "We are going to protect the integrity of the ballot box and we are going to defend the votes of the American citizen. So important."
Trump said on Wednesday he would seek an investigation into illegal voting after being repeatedly challenged over his assertions that he lost the popular vote in the Nov. 8 election to Democrat Hillary Clinton due to voter fraud. He has not offered evidence to support the claim.