Powell has promoted numerous conspiracy theories. She has claimed that Flynn was framed by a covert "deep state" operation, and has also promoted personalities and slogans associated with the QAnon conspiracy theory. Powell alleges that a secret international cabal involving communists, "globalists", George Soros, Hugo Chávez, the Clinton Foundation, the CIA, and thousands of Democratic and Republican officials—including Trump ally and Georgia governor Brian Kemp—used voting machines to transfer millions of votes away from Trump to Biden in the 2020 presidential election. After Powell baselessly accused Dominion Voting Systems and others of engaging in a conspiracy to rig the election against Trump, Dominion sued Powell for defamation. The city of Detroit asked a federal judge to sanction Powell for "frivolously undermining people's faith in the democratic process and their trust in our government". Powell, along with Michael Flynn, was banned by Twitter on January 8, 2021, for promoting the QAnon conspiracy theory "in line with our policy on Coordinated Harmful Activity. "