It's incredibly rare because it's very hard to both have an impact and get away with it not to mention the consequences of being caught are a felony. You need

It's incredibly rare because it's very hard to both have an impact and get away with it not to mention the consequences of being caught are a felony. You need to commit a lot of voter fraud to swing an election, it has to be a very close election. Like one state and 20,000 to 100,000 vote. A once in a 30-50 year election. You need to figure out before hand which state will be swing state that decides the election. Now you have to commit voter fraud 50,000 times in that state. You can't do it in person because the numbers are too larger so you have to do mail-in. How do you find 20,000-50,000 people across the state who you can get a mail in ballot for, steal it, and turn it in without anyone noticing. This is basically an impossible task that even if you pull off has a low chance of making a difference, and a large chance of sending you to jail.