Three high-profile Democrats announced their 2020 presidential intentions last week

U.S. Rep. Tulsi Gabbard (D-Hawaii) said Friday that she planned to run for president in 2020. Former Secretary of Housing and Urban Development Julian Castro (D), who formed an exploratory committee in December, also made a formal announcement of his candidacy on Saturday. 
Earlier in the week, Democratic activist and founder of NextGen Climate Tom Steyer (D) announced that he would not run for president.
As of January 14, 453 candidates had filed with the FEC for the 2020 presidential race, including 136 Democratic candidates and 62 Republican candidates.
Other notable candidates who have either filed with the FEC or announced exploratory committees include U.S. Sen. Elizabeth Warren (D), West Virginia Sen. Richard Ojeda (D), former U.S. Rep. John Delaney (D), and President Donald Trump (R).