 On 3 February 2020, the day of the Iowa caucuses in the Democratic presidential primary, Fitton suggested that voter fraud was afoot in Iowa by falsely claiming that “eight Iowa counties have more voter registrations than citizens old enough to register.” Iowa's Secretary of State, Paul Pate, a member of the Republican Party, debunked Fitton's claim by linking to official voter registration data.In 2017, Judicial Watch helped to stoke Republican attacks against Special Counsel Robert Mueller's investigation into Russian interference in the 2016 election.He has referred to the Mueller probe as a "coup" against Trump.