He came on the scene thanks to Sarah Palin.
http://www.politico.com/magazine/story/2016/11/steve-bannons-first-pick-for-president-214482
And, of course, the writer has to quote little, bitter Benji Shapiro, whom Bannon fired. Oh, Benji will claim he quit, but they did not want him there when he started his anti-Trump tirades.