Florida allows felons to vote if the state the felony conviction occurred in allows felons to vote. New York allows felons to vote, thus Florida allows him to vote.
While Florida generally makes it challenging for people in the state with felony convictions to regain their voting rights, former President Donald Trump had no issue casting a ballot for himself Tuesday in Palm Beach.
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Under Florida law, if a voter has an out-of-state conviction, Florida will defer to that state’s laws for how a felon can regain his or her voting rights.
Former President Donald Trump and Vice President Kamala Harris.
For Trump, that means he will benefit from a 2021 New York law that allows people with felony convictions to vote as long as they’re not serving a term of incarceration at the time of the election.
In the US, it depends on which state and certain conditions. Only two states, Maine and Vermont, will allow felons to vote, even while incarcerated. The link below has a good summary.
Florida follows the laws of the state where he was convicted so he would only be unable to vote while incarcerated, which won't happen because he is never punished for anything.