“That is why they want felons to be able to vote, in spite of the regulations in some states”
All states allow felons to vote, all 50 of them, conditions vary from state to state but all have provisions for felons to vote. Some after they have served their time, parole, probation etc. Maine and Vermont allow incarcerated felons to vote.
http://felonvoting.procon.org/view.resource.php?resourceID=286