Mitt Romney still leads the field by double digits in New Hampshire, but that lead has shrunk considerably, according to a new NBC/Marist poll.

Here is how the contest stands among likely Republican primary voters including those who are undecided yet leaning toward a candidate in New Hampshire:

* 39% for Mitt Romney
* 23% for Newt Gingrich
* 16% for Ron Paul
* 9% for Jon Huntsman
* 3% for Michele Bachmann
* 3% for Rick Perry
* 2% for Herman Cain
* 1% for Rick Santorum
* 4% are undecided

Huntsman's retail politiking in New Hampshire is paying few dividends at the moment, but with a little more than 30 days to go, he has an opportunity to make a respectable showing.

Ron Paul is the one to watch. If he breaks through in Iowa with a victory - a long shot but not out of the question - he could move ahead of Gingrich and threaten Mitt Romney given the history of the Iowa winner granting momentum to the victor going into the NH primary.

Gingrich needs to get busy building an organization. Given that he has failed to field a full slate of delegates in New Hampshire, and has little organization of any consequence in Iowa, his popularity may not translate into political victory when the votes are counted. Romney and Paul have far more extensive New Hampshire operations than Gingrich which may spell the difference on primary day.

Romeny is still the man to beat in New Hampshire but the picture is changing and by election day, might reveal a whole new landscape in the GOP race for president.