Yes, they do.  Every single one.

In fact, according to US federal law, a final vote count cannot be issued until every last absentee ballot has been counted.  In some cases, where the difference between two candidates is larger than the number of absentee ballots received, a winner is announced before all of the absentee ballots are counted, but no state’s electoral votes are considered officially one way or the other until each absentee ballot is counted.

Still skeptical about whether or not your vote counts?  Check out our short video about absentee voting here.  Ready to register already?  Click here and register to vote in 2 minutes or less.