POLITICS
03/28/2008 02:45 am ET Updated May 25, 2011

Opinion Polling Off The Mark Again In SC

It was another bad night for pollsters, as the pre-South Carolina opinion polls underestimated the margin of victory for Illinois Sen. Barack Obama. Unlike the fiasco following the New Hampshire primary, where polls had suggested Obama would best eventual winner Hillary Clinton, the South Carolina polls always showed Obama coming out on top. But further underscoring the faulty predictive nature of polling, they failed to accurately foreshadow Obama's eventual margin of victory.

Read more about opinion polling at HuffPost's HuffPollstrology here.

Final SC Results

Obama 55%
Clinton 27%
Edwards 18%

Zogby/Reuters C-Span Poll 1/25/08

Obama 41% (-14)
Clinton 26% (-1)
Edwards 19% (+1)
Someone else 4%
Not sure 10%

Margin of error 3.4

ARG South Carolina Poll 1/25/08

Obama 39% (-16)
Clinton 36% (+9)
Edwards 22% (+4)
Undecided 2%

Margin of error 4%

Survey USA Poll 1/24/08

Obama 43% (-12)
Clinton 30% (+3)
Edwards 24% (+6)
Other 2%
Undecided 2%

Margin of error 4.1%

PPP Poll 1/24/08

Obama 44% (-11)
Clinton 24% (-3)
Edwards 19% (+1)
Undecided 14%

Margin of error 4%

McClatchy MSNBC Poll 1/23/2008

Obama 38% (-17)
Clinton 30% (+3)
Edwards 19% (+1)
Undecided 13%

Margin of error 5%

Clemson Poll 1/23/08

Obama 27% (-28)
Clinton 20% (-7)
Edwards 17% (-2)
Undecided 36%

Margin of error 4.6%

Ebony Jet Poll 1/22/08

Obama 37% (-18)
Clinton 27%
Edwards 15% (-3)
Undecided 22%

Margin of error 2.9%

Rasmussen Poll 1/21/08

Obama 43% (-12)
Clinton 28% (+1)
Edwards 17%
Some other candidate 5%
Not sure 6%

See full polling data at Pollster.com

To read Arianna's blog about the creation of HuffPollstrology, click here.