The argument from Trump supporters boils down to: he's a lying, conning, narcissistic jerk, but he'll be our lying, conning, narcissistic jerk. To which I say, the con man has pulled the ultimate con when he has convinced you that while he used to be conning you he isn't conning you now. Miraculously after 70 years he has awakened to the need to work for the well-being of others!
And how about the Alicia Machado thing? Somehow he's going to intimidate China and Iran and bend them to his iron will, but a squabble with a former Miss Universe has him blasting desperate and unhinged Tweets in the middle of the night.