Washington (CNN) Fresh off his insurgent candidate's big win in Alabama, former Trump adviser Steve Bannon is making clear he is seeking retribution against fellow Republican campaign operatives who work against him.

"The populist movement is going to do a house cleaning of all those individuals that made a living off the conservative grassroots while stabbing them in the back," a source familiar with Bannon's thinking tells CNN.

Bannon is beginning that effort by trying to blackball GOP campaign strategist Jeff Roe, who worked for Sen. Luther Strange, who lost Tuesday's primary to Roy Moore. Bannon is spreading the word that he believes Roe is responsible for dirty tactics against Moore, and alleging that Roe worked with President Donald Trump's son-in-law and White House adviser Jared Kushner to mislead Trump about the state of the race in Alabama in and around Trump's endorsement of Strange.

Bannon and others backing Moore were horrified by Trump endorsing Strange, the candidate of the GOP establishment. Bannon and Kushner repeatedly clashed when the two were at the White House, with Bannon seeing Kushner as trying to moderate some of Trump's conservative leanings.

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