He's ahead double digits in both state with a whopping 20 point advantage in South Carolina. MSNBC: According to new NBC News-Marist polls, the former House speaker has now opened up commanding leads in South Carolina and Florida -- two states that historically have played important roles in deciding the eventual Republican nominee. Fueled by the support from conservatives and the Tea Party, Gingrich is ahead of former Massachusetts Gov. Mitt Romney by nearly 20 points in South Carolina. The winner of that state's primary has gone on to capture each GOP nomination since 1980.And he leads Romney by double digits in Florida, whose primary ultimately ended up deciding the party's pick in 2008. "You can see why the Romney people are getting a little itchy," said Lee Miringoff, the director of Marist College's Institute for Public Opinion, referring to the Romney campaign's recent attacks on Gingrich. Gingrich ahead "any way you slice it"In South Carolina, which holds its presidential...(Read Full Post)