More numbers out of the Palmetto State to chew on from SurveyUSA (Jan 4-6; 579 Dem LV, MoE +/- 4.2%; 658 GOP LV, MoE +/- 3.9%). On the Democratic side, what was a 2-point Clinton lead three weeks ago is now a 20-point Obama blowout:

Democrats
Obama 50 (+11 vs. last poll Dec 17-18)
Clinton 30 (-11)
Edwards 16 (-1)

Obama holds an 11.0-point lead in the RCP Average for South Carolina

On the Republican side, Huckabee appears to have gotten a decent pop, Romney and McCain have held their own, while Thompson and Giuliani slipped slightly:

Republicans
Huckabee 36 (+8 vs. last poll Dec 17-18)
Romney 19 (+1)
McCain 17 (+1)
Thompson 11 (-4)
Giuliani 9 (-3)
Paul 5

Huckabee holds an 8.3-point lead in the RCP Average for South Carolina