Steph Solis

USA TODAY

President Trump reportedly claimed during a meeting with lawmakers Thursday that out-of-state voters were bused into New Hampshire, costing him and Republican Sen. Kelly Ayotte a victory in the state. Now a Federal Election Commission official wants Trump to prove it.

Trump got 46.5% of the vote, compared to Democratic nominee Hillary Clinton's 46.8%. She received the state's four electoral votes. Such an allegation would mean that thousands of people illegally voted in New Hampshire — a felony under New Hampshire law, commissioner Ellen L. Weintraub said in a statement Friday afternoon.

"As a Commissioner on the Federal Election Commission, I am acutely aware that our democracy rests on the faith of the American people in the integrity of their elections," she wrote in a statement. "The President has issued an extraordinarily serious and specific charge. Allegations of this magnitude cannot be ignored."

Politico and The Associated Press reported that Trump made the claims Thursday during a private lunch meeting with a bipartisan group of 10 senators about judge Neil Gorsuch's nomination to the Supreme Court. Ayotte also was present because she is working with Gorsuch.

It's not the first time Trump has made claims about voter fraud without presenting evidence. In meeting with lawmakers last month, Trump claimed that 3 to 5 million illegal voters cost him the popular vote (Clinton won the popular vote in November by nearly 3 million). He also tweeted he would ask for "a major investigation into VOTER FRAUD, including those registered to vote in two states" and "those registered to vote who are dead..."