Absentee ballots are most always counted, though in some instances, they're added some time afterwards.
Provisional ballots, on the other hand, often are NOT counted unless an election is very close, and even then they still may not be counted for numerous reasons.
On a related note, Obama has already won in Dixville, NH - the first polling place in the nation to close and report results...
http://www.breitbart.com/article.php...show_article=1
Obama 15; McCain 6; Nader 0.
Ron