California Sen. Kamala Harris' announcement on Monday that she's running for president not only confirms a long-anticipated move but adds to a fast-growing list of Democrats who hope to challenge President Donald Trump in 2020.
Here's a look at the Democrats who are in so far.
Sen. Kamala Harris of California
Former Secretary of Housing and Urban Development Julián Castro of Texas
Rep. Tulsi Gabbard of Hawaii
Former Rep. John Delaney of Maryland
Former congressional candidate Richard Ojeda of West Virginia
Businessman Andrew Yang of New York
Announced exploratory committees
Sen. Kirsten Gillibrand of New York
Sen. Elizabeth Warren of Massachusetts