A federal judge in Pennsylvania rejected a suit from President Donald Trump’s campaign that sought to bar use of mail ballot drop boxes across the state.

The ruling is a major blow to the Trump campaign in a battleground state.

Republicans have challenged state laws that they say will lead to voter fraud. The judge said the Trump campaign's concerns were mere speculation. In reality, voter fraud is extremely rare.

The Trump campaign’s lawsuit asks the federal court to bar counties from accepting absentee ballots unless they are mailed by voters to their county election office, or dropped off in person.