One of the many reasons partisanship is a work of the flesh, is it destroys the partisan’s discernment. They’re no longer able to identify good fruit. They still know right from wrong, good from evil… but everything their guy does, no matter how wrong and evil, gets justified. No grace for those same wrongs and evils in the other parties—and even the good deeds they do, get labeled as ulterior motives and evil.
So it’s no wonder Evangelical partisans can’t see Donald Trump’s thorns and brambles.