SurveyUSA (8/9-11, likely voters, 7/12-14 in parens):
Kay Hagan (D): 41 (42)
Liddy Dole (R-inc): 46 (54)
Chris Cole (L): 7 (-)
So the gap closes from 12 to 5 points, but here's the rub: SUSA is now including Libertarian Chris Cole in the match-up, and it seems very doubtful that he'll be able to perform this well on election day. For now, Cole is taking heavy chunks from males (11%), voters aged 18-34 (12%), and independents (21%). Those numbers will dissipate by November -- likely in both directions.
It's still good news for Hagan, who went up on the air with her first general election ad today. Dole's also been hit recently by ads from the DSCC and Majority Action. Hopefully the two prongs of Hagan's positives and the DSCC's attacks will help to keep the numbers moving in the right direction.