First of all, he won an 18-person primary with 27.1% of the vote. Not exactly a ringing endorsement.
15 men (88.8% of vote), 3 women (the rest).
GOP gerrymandered, by the way.
Secondly, he didn't exactly kick butt in the GOP primary runoff.
And, finally, he's clearly no Lamar Smith. He won by less than 3 percentage points.
In 2014, a Green Party candidate received 14.7% of the vote, a Libertarian 13.5%. No Democrat challenged Smith.
I'd say Chip is