NBC: Gingrich lidera en Iowa; Romney en New Hampshire

NBC News:

With about four weeks until the first Republican presidential nominating contest, former House Speaker Newt Gingrich has surged to the lead in Iowa and has climbed nearly 20 percentage points in New Hampshire since October, according to new NBC News-Marist polls.

Meanwhile, former Massachusetts Gov. Mitt Romney has seen his support drop in both states.

In Iowa, which holds its caucuses on Jan. 3, Gingrich gets the support of 26 percent of likely caucus-goers (including those leaning towards a candidate) -- a 21-point jump since October.

He’s followed by Romney at 18 percent (an eight-point decline), Texas Rep. Ron Paul at 17 percent (a five-point increase), Herman Cain at 9 percent (an 11-point drop) and Texas Gov. Rick Perry at 9 percent (a two-point dip). No other Republican presidential candidate gets more than 5 percent support among likely caucus-goers.

With Cain’s decision to suspend his campaign -- which he announced on Saturday -- a reallocation of his supporters’ second-choice picks puts Gingrich ahead of the Iowa horse race with 28 percent; Paul and Romney are tied at 19 percent; and Perry lands at 10 percent.

In New Hampshire, which holds its primary on Jan. 10, Romney continues to lead, getting the support of 39 percent of likely GOP primary voters. But that’s a six-point decline since October.

Romney is followed in the Granite State by Gingrich at 23 percent (a 19-point gain), Paul at 16 percent (a three-point increase), and former Utah Gov. Huntsman at 9 percent (a four-point jump). No other Republican candidate gets more than 3 percent support.

The decision by Cain -- who is at 2 percent support in New Hampshire -- to suspend his campaign doesn’t change the race there all that much: Romney stays at 39 percent, while Gingrich moves one point to 24 percent.