March 4 (UPI) -- The 2020 presidential campaign has featured a diverse slate of Democrats -- and one Republican -- vying to challenge President Donald Trump.
The campaign featured one the most diverse group of Democrats ever to seek the United States' highest office, and includes the potential first female president as well as one who would be the first Hindu and American Samoan president.
On the Republican side, one candidate remains to challenge Trump in the primary season.
Here's a look at the candidates:Democrats Joe Biden
Former Vice President Joe Biden announced his campaign by citing racial violence that killed a woman in Charlottesville, Va., in 2017 as motivation.
"I cannot stand by and watch that happen. Everything that makes America America is at stake. That's why today I'm announcing my candidacy for president of the United States," he said in his announcement on April 25, 2019.
Gabbard formally announced her candidacy Feb. 2 during a rally in Oahu, Hawaii, where she portrayed herself as a member of a young class of politicians seeking to oust the old guard and existing way of doing business in Washington.
Gabbard became the first Hindu member of Congress in 2012 and would also be the first Samoan president. She said she plans to lean on her military experience to set herself apart from the other candidates, calling for a focus on veterans issues, as well as healthcare, criminal justice reform and climate change.Elizabeth Warren
Sen. Elizabeth Warren of Massachusetts formed an exploratory committee for a presidential campaign in late December and announced her presidency on Feb. 9, promising to fight for the middle class. She's said she plans to take on corrupt systems and institutions that favor the wealthy while taking advantage of the poor.
She's shown support for a Green New Deal to reduce the effects of global warming, Medicare for all, a new North American trade deal and a reduction in U.S. military presence around the world.
Former New York City Mayor Michael Bloomberg (March 4)
Minnesota Sen. Amy Klobuchar (March 2)
Former South Bend, Ind., Mayor Pete Buttigieg (March 1)
Entrepreneur Tom Steyer (Feb. 29)
Former Massachusetts Gov. Deval Patrick (Feb. 12)
Entrepreneur Andrew Yang (Feb. 11)
Colorado Sen. Michael Bennet (Feb. 11)
Former Maryland Rep. John Delaney (Jan. 31)
New Jersey Sen. Cory Booker (Jan. 13)
Author Marianne Williamson (Jan. 10)
Julian Castro, former secretary of housing and urban development (Jan. 2)
Sen. Kamala Harris, D-Calif. (Dec. 3)
Montana Gov. Steve Bullock (Dec. 2)
Former U.S. Rep. Joe Sestak (Dec. 1)
Former U.S. Rep. Beto O'Rourke (Nov. 1)
New York Mayor Bill de Blasio (Sept. 20)
New York Sen. Kirsten Gillibrand (Aug. 28)
Massachusetts Rep. Seth Moulton (Aug. 23)
Washington Gov. Jay Inslee (Aug. 21)
Former Colorado Gov. John Hickenlooper (Aug. 15)
Former Alaska Sen. Mike Gravel (Aug. 6)
California Rep. Eric Swalwell (July 8)Independents Bernie Sanders
Sen. Bernie Sanders of Vermont announced Feb. 19 he will again run for the Democratic nomination. It will be his second consecutive run for president.
Sanders said he moved the Democratic Party to the left during his 2016 campaign, raising issues like Medicare for all, a $15 minimum wage and tuition-free college.
"I'm running for president because, now more than ever, we need leadership that brings us together -- not divides us up," Sanders said. "Women and men, black, white, Latino, Native American, Asian American, gay and straight, young and old, native born and immigrant. Now is the time for us to stand together."Republicans Bill Weld
Former Massachusetts Gov. Bill Weld was the first Republican to challenge Trump, announcing his formal candidacy April 15. He hopes to appeal to the Republicans and independents who don't support Trump, but also don't want a Democrat in office.
"[O]ur president is simply too unstable to carry out the duties of the highest executive office -- which include the specific duty to take care that laws be faithfully executed -- in a competent and professional matter," Weld said. "It upsets me that our energies as a society are being sapped by the president's culture of divisiveness."
Former Illinois Rep. Joe Walsh (Feb. 7)
Former South Carolina Gov. Mark Sanford (Nov. 12)