CONCORD, N.H. — A new poll says the race for president remains tight in New Hampshire but the amount of undecided voters is on the rise.

The WMUR Granite State Poll released Thursday shows 45 percent of likely voters plan to support Obama, 40% say they will vote for Romney, and 3 percent say they support another candidate.

The percentage of those who are undecided jumped to 12 percent from 4 percent in August.

The findings are based on 635 randomly selected adults who were interviewed by phone between Sept. 4 and Sept. 11.

The poll was conducted by the University of New Hampshire Survey Center and has a sampling margin of error of plus or minus 3.9 percentage points.