Joe Biden
During a tour of the U.S. Senate with reporters before leaving office on December 5, 2016, Biden said that a presidential bid was possible in the 2020 presidential election, after leaving office as vice president. While on The Late Show with Stephen Colbert on December 7, he stated "never say never" about running for president in 2020, while also saying he did not expect he would run for office again. On January 13, 2017, exactly one week before Donald Trump took office. he said he would not run. However, four days later, on January 17, he took the statement back, saying "I'll run if I can walk."