He has a rather "flat", maybe even sociopathic personality. There's a "coldness" about him.
Sure, that's a step up from the President's narcissism but it's not enough to edge past Newt's ability to speak out.
I recall in 2008 saying he was probably the best qualified candidate but I just never felt comfortable with him. I still don't, I don't like narcissists and I don't want to have to vote for him, but he apparently is law abiding and reasonably decent. Sharp business practices, maybe, but no personality disorder.