Mitt Romney is about to lap the field in New Hampshire.

A new Suffolk University poll has Romney ahead with 43 percent. His closest competitos are Ron Paul with 17%, Jon Huntsman with 9% and Newt Gingrich with 8%.

These numbers should change a bit following Tuesday's vote in Iowa as candidates who do well there should see a jump in support in New Hampshire. However, Romney is well positioned to maintain his lead there.

Romney voters appear unlikely to change their minds about their choice as primary day approaches. Seventy-three percent of Romney voters now say they are unlikely to change their minds about their choice, compared to 64 percent of Huntsman voters and 60 percent of Paul voters.

Romney continues to lead big among older voters, especially among women age 65+, where Romney led Paul 62 percent to 8 percent.

As Gingrich and Huntsman battle for third place, both candidates will focus on the demographics that have the highest undecided levels, such as women ages 45-64 years, a category where the Suffolk University/7NEWS poll shows that 19 percent are still undecided.