Sunshine State News will live-blog tonight's GOP presidential debate in Sioux City, Iowa.
The 9 p.m. debate on Fox -- the last scheduled before Iowans caucus on Jan. 3 -- comes as Newt Gingrich's poll numbers are sliding.
The latest survey by Rasmussen Reports finds the former House speaker back down to 20 percent of likely caucus-goers -- shedding 12 points from a month ago.
Mitt Romney has retaken the lead, but still has only a 23 percent share, Rasmussen said.





