Others thought the new picture was a better reflection of Mr Craig, "because I'm most of the time a smiley and effervescent individual".
"One person said, 'You're going up in the polls you'd better jolly well be smiling'."
The Conservative Party's regional coordinators had been given the choice of both versions, and some including Palmerston North had chosen the original image, but "most other regions will have the smiley faces".
Commenting on the numerous unauthorised alterations to his billboards, Mr Craig said: "Frankly people have had fun with them and that's not a bad thing."
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Of the altered billboards, Mr Craig said one where he was shown Carmen Miranda style with fruit on his head and garish make-up on his face was popular with many people but his favourite was one where he'd been made to look like a vampire.
"They did the big cloak and the hood behind my head and then I think they had the eyes in red. People have gone to a huge amount of effort to be creative and you've got to admire it."