Linking to the copies of the exit polls on Fox's website, but these were conducted by Edison Research as part of the National Election Pool exit poll (the one that all the networks use) this past Tuesday. These are from the 2014 midterm exit polls for Iowa, New Hampshire, and South Carolina:
Iowa:
http://www.foxnews.com/politics/elections/2014/exit-polls?year=2014&type=governor&filter=IADems
Clinton 67%
Warren 11%
Biden 8%
someone else 14%
GOP
Huckabee 18%
Perry 17%
Bush 15%
Paul 14%
Christie 12%
someone else 24%
New Hampshire:
http://www.foxnews.com/politics/elections/2014/exit-polls?year=2014&type=governor&filter=NHDems
Clinton 64%
Warren 18%
Biden 4%
someone else 14%
GOP
Bush 22%
Paul 21%
Christie 15%
Huckabee 10%
Perry 4%
someone else 29%
South Carolina:
http://www.foxnews.com/politics/elections/2014/exit-polls?year=2014&type=governor&filter=SCDems
Clinton 68%
Biden 16%
Warren 5%
someone else 11%
GOP
Huckabee 20%
Bush 18%
Christie 12%
Paul 12%
Perry 11%
someone else 28%