But over recent days, all have pleaded guilty and accepted plea deals, potentially reshaping the case’s legal context and boosting prosecutors’ efforts to flip more defendants into cooperators. Ms. Powell pleaded guilty to reduced charges over efforts to overturn Mr. Trump’s loss in the 2020 election in Georgia. Ms. Ellis worked closely with former Trump lawyer and current Georgia defendant Rudy Giuliani to organize an appearance before Georgia legislators after the 2020 election in which presenters rolled out a litany of wild, false claims, including the assertion that 10,000 dead people had voted.