28 pollsters have polled on one or more 2008 Primary or Caucus as of today, 02/04/08, the eve of Super Tuesday. High-level summary follows:
Additional details, and caveats, on the jump.
Not all 28 pollsters polled on the same contests or on the same number of contests.
Double-click on the following detailed table if you need to enlarge it to read it.
For a complete discussion of the different ways that election poll accuracy can be measured, including a summary of all 8 known measures, see this paper presented at the 2006 conference of the American Association for Public Opinion Research.
Any errors in this table, or omissions from this table, should be reported to firstname.lastname@example.org.
SurveyUSA will endeavor to update this chart throughout the 2008 election.