From the NC Board of Elections website:
Mike Huckabee 12.17% 63,061
Alan Keyes 2.63% 13,631
John McCain 73.99% 383,401
Ron Paul 7.22% 37,392
No Preference 3.99% 20,667
TOTAL VOTES 518,152
The Republican vote was less than 1/3 of the Democratic vote of 1,593,335, and McCain's total was only 43% of Obama's 897,017.
Apparently a highly contested Republican contest for the governorship did not inspire very many Republican voters.
Although the Republican leadership has long viewed McCain as the nominee, more than 1/4 of the Republican voters still can't bring themselves to pull the lever for him.