Jeff Flake has proven himself to be, well, a bit Flaky at times, and a namby-pamby moderate as well.
I support and will vote for Trump. I like his challenging the rampant liberal PC BS... and his strong “border enforcement first” position, for example.
At the same time, I believe that many Trump supporters would prefer that he be more precise in stating strong positions. People will be offended by strong conservative-leaning positions no matter what; so who cares about that?
However when Trump’s lack of precision in dialogue needlessly offends those who would otherwise support his core positions, Trump only hurts his chances for election.
IMHO.
"Lack of precision" is certainly one way of putting it. He told Flake he was going to loose the election, and Flake isn't even up for election.