More than 2.3 million Floridians had voted by mail by the cutoff at 7 p.m. Tuesday. We had a lot of mail voting, you know, in Florida, DeSantis continued. The states primary elections came amid President Donald Trumps repeated complaints about voting by mail. Florida voters must request mail-in ballots. An odd confluence of influences made it difficult to predict voter behavior in the primary elections, Antonacci said.