(Alex Brandon | The Associated Press) In this Nov. 27, 2018, file photo, Sen. Bernie Sanders, I-Vt., speaks about his new book, 'Where We Go From Here: Two Years in the Resistance', at a George Washington University/Politics and Prose event in Washington. Sanders, whose insurgent 2016 presidential campaign reshaped Democratic politics, announced Tuesday, Feb. 19, 2019 that he is running for president in 2020.