What happens if someone votes for a defunct candidate on the Presidental Primary ballot?

I just got my sample ballot in the mail, and it lists three candidates for the Florida Presidental Primary.

Hillary Clinton
Martin O’Malley
Bernie Sanders.

O’Malley suspended his campaign weeks ago. One would think this would be important enough for the Supervisor of Elections office (which let’s be honest, has hardly anything else to do ever) to print up new ballots. But apparently it’s not.

So, assuming some people are idiots (a fair wager, given the facts in evidence during this election cycle) what happens to all of the votes that are given to this person who is no longer running?

I’m assuming they’re just thrown away.

Mostly I’m just complaining. You had ONE JOB, elections office. ONE.