Presidential primary 2008 polls: What went wrong

University of Michigan survey experts working with the American Association for Public Opinion Research have identified several reasons polls picked the wrong winners in the 2008 Presidential Primary.

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<p><a href="http://www.physorg.com/news157632787.html">Presidential primary 2008 polls: What went wrong</a></p> <p>University of Michigan survey experts working with the American Association for Public Opinion Research have identified several reasons polls picked the wrong winners in the 2008 Presidential Primary.</p>