The good news is that I doubt he could actually vote more than a half dozen times before getting caught. :)
He doesn't even need to show up to vote. No ID is required.
Anybody can vote for him using his "name" - even a crooked precinct worker after poll closing time or when nobody is looking (like with the hanging chads in Florida).
This happens all the time in Dem cities like Detoilet, Philtydelpia, Screw Louis, Newjerk, Graftden, etc.