PPP (pdf) (9/11-12, likely voters, 7/23-25 in parentheses):
Paul Hodes (D): 43 (42)
Kelly Ayotte (R): 47 (45)
Undecided: 9 (13)
(MoE: ±2.2%)
PPP's shift from a registered to a likely voter model doesn't change the spread significantly in New Hampshire, where Ayotte leads 2nd CD Rep. Paul Hodes by four points. Their LV model has a sample that split its vote by 47-47 between Obama and McCain (down from a 9-point Obama win in 2008, and a three-point Obama edge in PPP's last poll). Both Ayotte and Hodes begin the general election campaign equally damaged: Ayotte's favorables took at turn for the worse, at 35-47, but so have Hodesey's, which are at 35-46. Hodes has been battered by a seven-figure Chamber of Commerce ad buy, while Ayotte just barely survived a competitive primary despite her big financial advantage on movement conservative Ovide Lamontagne.
Of note is that compared to her Republican primary opponents, Ayotte isn't particularly stronger - Lamontagne and Bender both had similar leads on Hodes according to this poll, while Binnie trailed Hodes by a point. (Still, it's clear that the underfunded, more obviously conservative Lamontagne would have been the better choice for Dems, no matter the top lines of this poll.)