Who is running for president in 2020? An interactive guide

William Cummings, Sean Rossman and Jim Sergent, USA TODAY

The Iowa caucuses are less than a year away and the slate of 2020 presidential candidates remains crowded – with senators and House members, not to mention a  young mayor, an author, an entrepreneur and a former vice president.

Even with a few candidates dropping out, others have jumped in, and the field now stands at 20 Democrats and three Republicans, including President Donald Trump. 

But we still have a long way to go until the general election on Nov. 3, 2020, when voters will determine who will hold the Oval Office for the next four years. 

In the meantime, here's a breakdown of the people who have officially announced their candidacies.

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Contributing: Susan Page, Christal Hayes, Nicholas Wu, Jeanine Santucci, Ryan W. Miller and Emma Kinery, USA TODAY; Brianne Pfannenstiel, Des Moines Register; Vic Ryckaert, Indianapolis Star; Nicholas Pugliese, Trenton Bureau; Aki Soga, Burlington Free Press; Jon Campbell, Albany Bureau; The Associated Press. 

This article originally appeared on USA TODAY: Election 2020: Who is running for president in 2020?