Kamala Harris is the sixth Democrat — and the third female U.S. senator — to announce their candidacy for the 2020 presidential campaign. Here is information on declared candidates as of Jan. 21:

Change in County Population, 2017 to 2018

Most of the counties with the highest rates of growth were concentrated in the West and South. Maricopa County in Arizona, home to Phoenix, topped all counties in numeric growth, adding over 81,000 new residents in one year.

SOURCE: U.S. Census Bureau
JOHN DUCHNESKIE / Staff Artist

Declared Democratic Presidential Candidates

Kamala Harris

Age: 54

Born: Oakland, Calif.

Position: U.S. senator from California

Education: Graduate, Howard University; law degree, University of California

Personal: Husband, Doug Emhoff

Issues: $15 minimum wage, rights of refugees and immigrants, civil rights

Elizabeth Warren

Age: 69

Born: Oklahoma City

Position: U.S. senator from Massachusetts

Education: Graduate, University of Houston; law degree, Rutgers University

Personal: Husband, Bruce Mann; two children

Issues: Early advocate of Consumer Financial Protection Bureau

Kirsten Gillibrand

Age: 52

Born: Albany, N.Y.

Position: U.S. senator from New York

Education: Graduate, Dartmouth College; law degree from UCLA

Personal: Husband, Jonathan Gillibrand; two sons

Issues: Seeks justice for sex assault survivors in military and college campuses

Julian Castro

Age: 44

Born: San Antonio, Texas

Position: HUD secretary in the Obama administration, 2014-17; San Antonio mayor, 2009-14

Education: Graduate, Stanford University; law degree, Harvard Law School

Personal: Wife, Erica Lira; two children

Issues: Champion of community development; advocate of LGBT rights

Tulsi Gabbard

Age: 37

Born: American Samoa

Position: U.S. House representative from Hawaii; also a major in the Hawaii National Guard

Education: Graduate, Hawaii Pacific University

Personal: Husband, Abraham Williams

Issues: Environment, abortion rights

John Delaney

Age: 55

Born: Wood-Ridge, N.J.

Position: Former U.S. House representative from Maryland; former businessman and entrepreneur

Education: Graduate, Columbia University; law degree, Georgetown University

Personal: Wife, April McClain; four children

Issues: Elimination of partisan gerrymandering; bipartisanship

Kamala Harris

Age: 54

Born: Oakland, Calif.

Position: U.S. senator from California

Education: Graduate, Howard University; law degree, University of California

Personal: Husband, Doug Emhoff

Issues: $15 minimum wage, rights of refugees and immigrants, civil rights

Elizabeth Warren

Age: 69

Born: Oklahoma City

Position: U.S. senator from Massachusetts

Education: Graduate, University of Houston; law degree, Rutgers University

Personal: Husband, Bruce Mann; two children

Issues: Early advocate of Consumer Financial Protection Bureau

Kirsten Gillibrand

Age: 52

Born: Albany, N.Y.

Position: U.S. senator from New York

Education: Graduate, Dartmouth College; law degree from UCLA

Personal: Husband, Jonathan Gillibrand; two sons

Issues: Seeks justice for sex assault survivors in military and college campuses

Julian Castro

Age: 44

Born: San Antonio, Texas

Position: HUD secretary in the Obama administration, 2014-17; San Antonio mayor, 2009-14

Education: Graduate, Stanford University; law degree, Harvard Law School

Personal: Wife, Erica Lira; two children

Issues: Champion of community development; advocate of LGBT rights

Tulsi Gabbard

Age: 37

Born: American Samoa

Position: U.S. House representative from Hawaii; also a major in the Hawaii National Guard

Education: Graduate, Hawaii Pacific University

Personal: Husband, Abraham Williams

Issues: Environment, abortion rights

John Delaney

Age: 55

Born: Wood-Ridge, N.J.

Position: Former U.S. House representative from Maryland; former businessman and entrepreneur

Education: Graduate, Columbia University; law degree, Georgetown University

Personal: Wife, April McClain; four children

Issues: Elimination of partisan gerrymandering; bipartisanship

The Philadelphia Inquirer