Sen. John Sununu (R) has significantly narrowed the once double-digit gap between him and former Gov. Jeanne Shaheen (D), according to the most recent public poll results in the state.

Shaheen led Sununu, 46 percent to 42 percent, with 10 percent undecided, in the latest Granite State poll by the University of New Hampshire. This survey of 475 likely voters, taken July 11-20 with a margin of error of 4.5 points, showed the smallest margin between the two candidates in any public poll this cycle.

Sununu had trailed Shaheen by double-digits in different surveys, including those performed by the university. In the April Granite State poll, Shaheen led Sununu 52 percent to 40 percent, with 7 percent undecided.

In fact, a poll conducted by the GOP firm American Research Group that was released Tuesday showed Shaheen ahead 58 percent to 36 percent. The poll of 600 likely voters, taken July 19-21, had a 4-point error margin.

In the competitive 1st district, the Granite State Poll showed former Rep. Jeb Bradley (R) leading the woman who ousted him, freshman Rep. Carol Shea-Porter (D), 46 percent to 40 percent, with 14 percent undecided. In the 1st district, the university questioned 235 voters and the poll had a margin of error of 6 points.

Shea-Porter, however, continued to maintain her lead over the other candidate seeking the Republican nomination in the Sept. 9 primary, former state Health Commissioner John Stephen. In a trial heat, Shea-Porter had 42 percent to Stephen’s 36 percent, with 21 percent undecided.