On October 16, 2020 at an Ocala, Florida rally, Trump repeatedly called Matt Gaetz “Rick.”

Matt Gaetz is the US House Representative from Florida’s 1st district. Rick Gates was a former aide that pleaded guilty to lying to the FBI regarding Russian interference in the 2016 election.

Business Insider – Trump repeatedly botched Rep. Matt Gaetz’s name at a Florida rally, calling him the name of a former aide who was convicted
The Washington Post – Rick Gates sentenced to 45 days in jail, 3 years probation for conspiracy and lying to FBI in Mueller probe
Wikipedia – Matt Gaetz
Wikipedia – Rick Gates (political consultant)