Citizens convicted of crimes are citizens just like you (I assume) and I. I don't think most people find it beneficial to disenfranchise them. One obvious use

Citizens convicted of crimes are citizens just like you (I assume) and I. I don't think most people find it beneficial to disenfranchise them. One obvious use case for not disenfranchising citizens convicted of crimes, is a politician who criminalizes opposition, thus making it impossible to vote them out. As for policies which hurt people: policies favoring old folks often hurt the majority of people, but there isn't a big push to disenfranchise old people.