Labor Day is often seen as the unofficial kickoff to the campaign season and nearly every presidential candidate will be out on the trail, reports CBS News correspondent Nancy Cordes.<br />Six of them will be in the early primary state of New Hampshire: four Republicans and two Democrats.<br />Twenty nine percent of Republicans in Iowa and 28 percent in New Hampshire now say they favor the brash billionaire, according to a recent NBC News/Marist Poll.<br />Those are his strongest poll numbers yet.<br />In a hypothetical 2016 match-up, he beats Clinton in Iowa by 5 points.<br />There are just 147 days until the Iowa caucuses and 155 days until the New Hampshire primary.
