"After a thorough review, your provisional bllot was not counted because the signature on the provisional ballot certificate envelope did not match the signature on your voter registration record," according to the letter, which Slater later pulled from Twitter.
Slater had Tweeted about his Election Day-wait as well as his problems casting a ballot.
"Made it in the room only to find out the DMV didn't register me when I got my new license. They asked me if I wanted to reg and I said yes," Slater tweeted on Election Day. "So, now I'm standing by and waiting while this guy tries to get the State on the phone I guess. I really want to vote."
He did, by provisional ballot.
Get ready for more stories like this in Florida. Tens of thousands of provisional ballots were cast in Florida and many of them didn't count.
Provisional ballots are used when a person's voter registration or voting precinct are in doubt. In each of the 67 counties, the provisional ballots are then reviewed by a three-member canvassing board that tries to determine if the vote were legitimately cast before counting it.