I can't swear this is true for EVERY state - so bear with me on that...
but my understanding is that no felon can vote while incarcerated, on probation or parole & sometimes for a holding period after & in some states never again at all.
YET - there is no law preventing a convicted felon from running for office or holding office even while imprisoned. http://www.factcheck.org/2008/11/felons-in-office/
What do you think about that?
(And no - they can't become president
& I think Cali was trying to bar this but not sure where they got with it)