Former White House chief strategist Stephen Bannon said Saturday that President TrumpDonald TrumpBaldwin calls Trump criticism following 'Rust' shooting 'surreal' Haley hits the stump in South Carolina Mary Trump files to dismiss Trump's lawsuit over NYT tax story MORE will "win with 400 electoral votes in 2020," following reports that he had lost faith in the president's ability to complete his current term.

"The populist, nationalist, conservative revolt that's going on, that drove Donald Trump to victory, that drove Judge [Roy] Moore to victory, that will drive 15 candidates to victory in 2018, and I hate to break it Graydon Carter and the good folks at Vanity Fair, but yes, President Trump is not only going to finish this term, he's going to win with 400 electoral votes in 2020," Bannon said during a speech at the Values Voter Summit in Washington.

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Bannon reportedly said several months ago that Trump only has a 30 percent chance of finishing his current term, a source told Vanity Fair, who said the president also did not know the function of the 25th Amendment, which allows a majority of the Cabinet to vote for the president to be removed from office.

Bannon returned to the far-right Breitbart News outlet after leaving the White House in August. The former Trump strategist said he left his post to be a "wingman outside" the White House for Trump to help advance the president's agenda.

In his speech Saturday, Bannon also committed that he would "get to the progressive Democrats," but said that "right now it's a season of war against the GOP establishment."

Bannon laid out his plans to back challengers to establishment Republicans in Congress for the 2018 midterm elections in an interview earlier this week. 

"There's a coalition coming together that is going to challenge every Republican incumbent except for Ted CruzRafael (Ted) Edward CruzCongress averts shutdown after vaccine mandate fight On The Money — Congress races to keep the lights on House sets up Senate shutdown showdown MORE," Bannon told Fox News's Sean Hannity on Monday. 

Bannon rallied for former judge Roy Moore in Alabama's Senate GOP runoff last month. Moore defeated Sen. Luther StrangeLuther Johnson StrangePress: For Trump endorsement: The more sordid, the better Pandemic proves importance of pharmaceutical innovation The Hill's Morning Report - Biden assails 'epidemic' of gun violence amid SC, Texas shootings MORE, who was endorsed by Trump and congressional Republicans.

Trump surpassed the necessary 270 electoral votes in the Electoral College to defeat Hillary ClintonHillary Diane Rodham ClintonRepublican Ohio Senate candidate slams JD Vance over previous Trump comments Budowsky: Why GOP donors flock to Manchin and Sinema Countering the ongoing Republican delusion MORE in the 2016 presidential election. Trump won 304 electoral votes to Hillary Clinton's 227.