We all know numerous people who are convinced that the 2020 election was stolen from President Trump. This is despite all the court cases made by the Trump campaign and others that found no fraud. And despite the Department of Justice investigations that showed minimal fraud.
The link below is from the Conservative Heritage Foundation. They publish all the legal cases about voter fraud. Take a look at their data base. Many of the cases are where local officials tried to increase their vote count to retain their jobs. There was voter fraud committed by both Democrats and Republicans. Voter fraud took place in numerous States, most of them not in the battleground States. And none of them would have gotten anywhere near the number needed to change the Presidential elections.