Exit polls are also used by the 'rat party as an excuse to cry "foul" when their candidate loses. After the 2004 election, in late 2004 or early 2005 or so, Jimmuh Carter visited Rice University here in Houston to make a speech about something. There were protesters waiting with signs that read "Exit Polls Don't Lie!" These pathetic losers were trying to enlist Jimmuh's aid in contesting the 2004 election.
You can see downer clowner on this thread. People who do or do not talk to exit pollsters, and how they are selected, do cause these exit polls to be inaccurate. Moreover, these exit polling without the numbers are 10x better than we saw in the first two presidential elections for this century.