The Democratic firm Public Policy Polling is out with a new '08 robo-call survey in North Carolina. On the Democratic side, PPP's survey of the 3 top tier candidates shows Barack Obama trending upward while John Edwards is losing steam in his home state:

Democrats
Obama 27 (+5 vs. last poll June 4)
Clinton 27 (+ 1)
Edwards 26 (-4)
Other 10 (-1)
Undecided 11 (nc)

As you can see from the chart in the PPP document, Edwards peaked around 40% in late March/early April after announcing the recurrence of his wife cancer and has declined in every successive survey.

On the Republican side, the results look a little screwy, since PPP added Newt Gingrich back into the mix after an extended absence, everyone lost ground except for Fred Thompson and undecideds jumped in a significant way:

Republicans
Thompson 34 (+9 vs. last poll June 4)
Giuliani 15 (-10)
Gingrich 13 (no trend)
McCain 7 (-7)
Romney 6 (-8)
Other 5 (-4)
Undecided 21 (+20)