I think that, sadly, the Albert Mohlers and Franklin Grahams of the world are far more accurate representatives of American Evangelical Christianity, at this time, than people like BRTD or Jimmy Carter.
But that probably will change when the former group starts dying off.
And, obviously, it's not just Evangelicalism that's dominated by lunatics. Islam has plenty of toxic elements, but that's why we should be paying attention to the reformers within that faith and dismiss the Wahhabi/authoritarian/regressive sects.
Albert Mohler is against Trump though. You can criticize him on theological grounds, but for the purposes of this discussion he is no Franklin Graham.
Being against Trump doesn't really help if you hate gays, transgender, any type of non traditional marriage, etc.