Sen. Kamala Harris (middle) with Sen. Tammy Baldwin (left) and Wisconsin State Assemblywoman Shelia Stubbs (right) in Madison last summer. (Photo by A. David Dahmer)

California Democratic Sen. Kamala Harris, the second African-American woman in American history to serve in the U.S. Senate and the first African-American and first woman to serve as California’s Attorney General, has announced that she is running for president of the United States.

“I’m running for president of the United States,” Harris, 54, said during an appearance on ABC’s Good Morning America. Harris timed her announcement with Martin Luther King Jr. Day and will be jumping into what is likely to be a crowded Democratic primary field.

Harris is the first African-American to formally enter the 2020 fray. The California senator plans to launch her campaign during a rally in Oakland, California, on Jan. 27.