Zogby's latest (April 30-May1) is one of the few bright spots for Obama over the last 48 hours, showing him with a big lead over Clinton, though without any previous polling from Zogby we can't tell which direction Obama may be going:

Obama 50 (no trend)
Clinton 34
Undecided 8

Overall, Obama's lead in the RCP Average for North Carolina ticked back up to 8.4%.