He has already pledged his life style, fortune, and shown he is honorable
In the last two days he has releases a paper on the 2nd amendment and by allowing speakers to express themselves no matter how rediculous (did you hear the one with the dreams?) a respect for the first amendment
I am not questioning that.
However, I for one have not taken him seriously until now because he has been all "sizzle and no steak", and the missing ingredient for me has been a clear explanation of any guiding principals, which should be the founder's intent and the Constitution.
What has made me look at Trump seriously was his explicit reference to the text and intent of the Fourteenth Amendment in the last debate when they were discussing birthright citizenship.
He just needs to do that sort of thing reflexivley and consistently.