Story highlights Donald Trump remains atop New Hampshire Republican presidential primary race, according to a new CNN/WMUR poll out Thursday

Florida Sen. Marco Rubio climbs to second place with 18%

(CNN) Donald Trump continues to hold a wide lead among likely Republican primary voters in New Hampshire, according to a new CNN/WMUR tracking poll, with the pack vying for second place is beginning to break up.

Behind Trump's field-leading 29% support, Florida Sen. Marco Rubio climbs to second place with 18% following his strong third place finish in Iowa, followed by Ted Cruz (13%) and John Kasich (12%) in a near-tie for third. Jeb Bush holds fifth place at 10%, a hair behind Cruz and Kasich, with Chris Christie and Carly Fiorina well behind at 4% each. The fight for second place between Cruz, Rubio and Kasich remains within the survey's margin of sampling error.

The poll was conducted entirely after the Iowa caucuses.

Cruz has held steady compared with his pre-Iowa standing, while Kasich and Bush have each bumped up their share of the vote slightly, though within the margin of sampling error. Christie has lost some ground, dipping 4 points since a CNN/WMUR poll conducted before the Iowa caucuses.

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