They are as accurate as they can expected to be given the number of votes, there's always margin of error in anything, doesn't mean it's rigged..

It just gets pretty emotional when the vote difference is so close it falls within that standard margin of error.

This whole fiasco of everyone kneejerking to computers after Dade counties hanging chads is going to screw things up for a couple of cycles, but all the votes are tallied locally everywhere anyway and most people are honest enough..