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South Carolina: Why So Much Variation?

Mark Blumenthal | Posted 05.25.2011 | Politics
Mark Blumenthal

We've had quite a bit of discussion today in the comments section about the wide variation in results from the South Carolina polls. Reader Ciccina no...

More NH Clues: The CBS Panel Survey

Mark Blumenthal | Posted 05.25.2011 | Politics
Mark Blumenthal

One of the theories about what went wrong for the polls in New Hampshire is that the apparent post-Iowa "bounce" for Barack Obama never really occurre...