How do you prove there was? Elections in America are massively decentralized, and locally controlled. It would be virtually impossible to mass-produce some fraudulent control mechanism that could be broad enough to impact the election overall, and all law enforcement agencies, including the FBI, have confirmed that widespread voter fraud is virtually non-existent in the United States. There's way more evidence that elections, past and present, have been free and fair, and accurately reflective of the will of the people ... than there is any evidence of widespread voter fraud. Sowing seeds of doubt in the validity of democratic processes, is a well-documented early step in the death of democracies. I guess my question is ... if you've given up on the concept of free and fair elections in America, how do you propose we select our local, state, and national leaders? Maybe "Rock - Paper - Scissors"? Or possibly "Drawing Straws"? I just don't get where the election conspiracy theorists want to take us with this train of thought. I guess you could argue that mail-in ballots are evil and rampantly fraudulent ... but it's an argument (a) devoid of evidence, and (b) the argument people make when they expect to lose and believe that selling doubt in the process is their only hope. I'm just sayin' ....
Let's just all go vote, by whatever means is legal and locally available ... and see who wins. That's how democracy is supposed to work.