Due to the COVID-19 pandemic, mail-in voting will play a large role in November’s presidential election. For the past several months, President Donald Trump has aimed to cast doubt on the mail-in voting process, claiming without evidence that the process is flawed and filled with fraud.

The Trump administration has repeatedly attempted, without success, to block states from sending out ballots to registered voters. While Trump’s legal challenges have stalled, he has succeeded in sowing doubt and distrust among some portion of the American public. 

However, the facts remain clear: Voter fraud is very rare and has never influenced a major election. In 2017, the Brennan Center for Justice determined that the risk of ballot fraud was somewhere between 0.00004% and 0.0009%.

MORE: Cartoon: Donald’s Ballot