Voting by mail is legal in some states anyway, and alright, sure, maybe I was wrong. Maybe there was a bit of voter fraud. But this was the most watched election in history. Any fraud would be rooted out in the final results.
Remember back in 2016 with the Russian chatbots trying to convince you to vote for Trump and spreading fake news? There were mountains of evidence for that. This has little evidence, and besides, why would voter fraud only be in BIDEN'S favour?