http://www.stltoday.com/blogzone/political-fix/political-fix/2008/11/mo-early-exit-poll-numbers-pro-obama/">Mo early exit poll numbers pro-Obama
Early exit poll results in Missouri give Democrat Barack Obama a seven-point edge over Republican John McCain.
However, experts and some political activists in both parties emphasize that exit polls — especially the early waves — tend to lean Democratic, because such voters often are more willing to participate in such polls, which involve interviews outside the polling place.
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http://www.stltoday.com/blogzone/political-fix/political-fix/2008/11/mo-early-exit-poll-numbers-pro-obama/