WASHINGTON (Sinclair Broadcast Group) — Massachusetts Sen. Elizabeth Warren made it official Monday and became the first major Democratic candidate to formally announce her intent to take on President Donald Trump in 2020.
But with 13 months until the Iowa caucuses and New Hampshire primaries, there are dozens of other contenders waiting in the wings to compete in what is expected to be a very crowded, competitive field of Democrats.
Below is a list of some of the Democrats who have announced their intent to run or are reasonably expected to seek their party's nomination:
The two-term progressive senator from Massachusetts announced her intention to run in an early morning email to supporters on New Year's Eve saying she was forming an exploratory committee, allowing her to raise money and hire staff for her campaign.
Warren was considered a possible contender in 2016 but chose not to run, leading some pundits to argue she may have missed her chance. After repeated taunts from President Trump who derisively called her "Pocahontas," Warren took a DNA test earlier this year and publicized the results in an awkward attempt to prove her Native American ancestry.
The former secretary of Housing and Urban Development in the Obama administration and ex-mayor of San Antonio announced on Dec. 12 that he was forming an exploratory committee.
Castro is the grandson of a Mexican immigrant and told reporters he is running for president to "bring people together instead of tear them apart." Not yet a familiar candidate for most voters, Castro said he would make a second announcement about his candidacy on Jan. 12, 2019.
The retired Army and state senator from West Virginia, filed with the Federal Election Commission (FEC) Nov. 11. In an announcement on Facebook, Ojeda spoke about making sacrifices as a public servant and said he would focus on outreach to working-class Americans. "We have not had people who have really fought for the working-class citizens in this country," he said, adding he believes he relates to the people "far more than the president does."
Ojeda ran an unsuccessful campaign for Congress in 2018 and was defeated by Republican Carol Miller.
The three-term congressman from Maryland was the first to file with the FEC on Aug. 10 and has been on the campaign trail ever since. In the summer of 2018, he announced he would not seek re-election to Congress.
Delaney is currently polling below 1 percent but has been focusing on his ground game in early primary states. By November, the candidate had already spent more than $1 million on 2020 presidential ads in Iowa.
The California senator is rumored to be looking at campaign headquarters in Baltimore or Atlanta, according to reports. She and a number of other leading contenders are expected to officially launch their campaigns in the coming weeks.
Harris has a new book coming out in January, titled, "The Truths We Hold: An American Journey," which checks another box on a presidential candidate's to-do list.
The New Jersey senator and former mayor of Newark is reportedly looking for a campaign manager and strategists to jump-start his chances in the Iowa caucus, according to The New York Times.
Earlier this month, Booker made an appearance in New Hampshire where he met with supporters and state party officials.
After an astronomic rise to national prominence in the 2016 Democratic primaries, Vermont Independent Sen. Bernie Sanders is still a favorite among some Democrats, particularly younger, millennial voters.
Sanders teased his 2020 bid earlier this month at a Sanders Institute conference, telling a room full of supporter, that "if it turns out that I am the best candidate to beat Donald Trump, then I will probably run."
New York Sen. Kirsten Gillibrand is reportedly shopping for a campaign manager and will likely launch a 2020 bid from upstate New York.
While running for re-election in 2018, Gillibrand denied rumors of her White House aspirations. After the midterms, Gillibrand teased a possible presidential run on "The Late Show with Stephen Colbert" last month promising she would "give it a long, hard thought of consideration."
Ohio Sen. Sherrod Brown has cast himself as a strong advocate for workers and has the longest track record of victories for a Democratic candidate in Ohio.
Brown has dropped hints about running for the White House in recent months, touting his 2018 campaign for workers and progressive values as a "blueprint for our nation in 2020." Brown is among the Democrats who could mobilize the white working-class voters who helped Trump win in 2016.
Former Virginia governor and ex-Democratic National Committee chairman Terry McAuliffe told CNN's "State of the Union" Sunday that he "obviously" looking at a 2020 presidential bid.
McAuliffe signaled he might enter the race later waiting for large field of candidates to winnow out. "I don't have to rush into this," he said, other candidates, adding he has plenty of support from friends in the national and state Democratic Party apparatus.
Washington State governor and chairman of the Democratic Governors Association, Jay Inslee signaled he could throw his hat in the ring as a leading climate change candidate.
In an interview with Rolling Stone, it is "absolutely imperative" for the Democratic Party put forward a climate candidate in 2020, adding, "I’m not ruling out anything in 2020 at the moment."
Retiring Colorado Governor John Hickenlooper set his eyes on high office after term limits prohibited him from seeking re-election in 2018.
Hickenlooper has already founded his own political action committee called Giddy Up, and recently visited both Iowa and New Hampshire. He is expected to announce his final decision in January.
Another Coloradoan could be on the Democratic ballots in 2020. Moderate Colorado Sen. Michael Bennett was rumored to be reaching out to Democrats in Iowa.
Colorado Public Radio reported on an individual familiar with Bennet's thinking who said the senator "is seriously thinking about running."
Earlier this month Minnesota Sen. Amy Klobuchar announced she is still in the phase of "considering" a 2020 bid. If she ran, she could appeal to working-class voters in the Midwest who cast their ballots for Trump.
Klobuchar told MSNBC that the Democrats need a 2020 candidate who will appeal to middle-class voters, telling MSNBC that "too many people were left behind" in the 2016 election.
The 37-year-old congresswoman from Hawaii is expected to announce her candidacy in January, according to reports. Gabbard is a progressive and among the few members of Congress who supported Bernie Sanders in 2016.
Earlier this month, Gabbard tested the waters in New Hampshire where she met with supporters and local party activists. She told the Honolulu Star-Advertiser, “I’m seriously thinking of how I can best be of service to our country."
Early polls show former Vice President Joe Biden consistently leads the pack of Democratic contenders for 2020 with as much as one-third of voters saying they would support him.
Biden has decades of experience as a senator from Delaware and President Obama's VP. Biden was pressured to run in 2016 but turned down the opportunity after losing his son, Beau Biden to brain cancer in 2015. He is expected to announce his bid in January.
The outgoing congressman from Texas, Beto O'Rourke stole national headlines and raised millions of dollars in his unsuccessful effort to oust Texas Republican Sen. Ted Cruz.
O'Rourke has a formidable social media presence, support from young voters and has reportedly been hounded by Democratic operatives eager to work on his 2020 campaign. The 46-year-old recently met with Barack Obama and surged to the top of early polls.