Here's everyone who has officially announced they are running for president in 2020

The 2020 presidential election is more than a year away, but many hopefuls are already announcing their candidacies. 21 Democratic contenders have already jumped into the primary, including a former Vice President, seven US Senators, six members of the House, and two governors. Former Massachusetts Governor Bill Weld is also challenging Trump in the Republican primary.Here's a list of the major party 2020 presidential candidates. Visit Business Insider's homepage for more stories.Soon after assuming the office of the presidency in January 2017, President Donald Trump filed preliminary paperwork that laid the groundwork for re-election in 2020.With the official primaries almost nine months away, 21 Democratic contenders have already lined up to challenge Trump, making for one of the largest and most diverse primary fields in recent history. On April 25, former Vice President Joe Biden formally entered the Democratic field after months of teasing a presidential run. And a week later on May 2, Colorado Sen. Michael Bennet became the most recent Democrat to join the field. Biden, seven US current Senators, six current and former members of the House of Representatives, three mayors, two governors, one businessman, and one author and spiritual guru are in the race.Trump is also facing opposition within his own party. Former Massachusetts Governor and Libertarian vice presidential nominee Bill Weld announced he will run against Trump in the Republican primary.Here are all the major party candidates running for president in 2020: