I have never heard of buses of Democratic votes outside the fantasy realm of conservative blogs and conservative opinion people on cable news. I have heard of outright mass voter fraud P2P scams ran by the republican party in North Carolina. Funny, Republicans there seem to think the participants don't deserve any punishment.
I don't think all of those people are Democratic voters, but the Republican party has determined if they eliminate as many of those voters as they can they will gain a net benefit in terms of vote count. Available demographic data seems to support that theory.
How can someone in prison vote multiple times? Most people in prison can’t vote at all. The ones that can vote or want to vote would be watched by the prison officials. Don't forget some of those folks are Republicans too. Anyway, not many incaracted people are allowed to vote. There has been a recent push to restore voting rights to people that have served their time and I think that is appropriate. I know first hand there are a lot of Republican/Trump “Bubba voters” that have lost their voting rights for felony drunk driving, domestic violence, meth, pot, opioids and or other convictions that they probably didn’t serve any actual time in prison for.
