Democratic Party:
Joe Biden
Withdrawn during primaries:
Bernie Sanders | Tulsi Gabbard | Elizabeth Warren | Michael Bloomberg | Amy Klobuchar | Pete Buttigieg | Tom Steyer | Deval Patrick | Michael Bennet | Andrew Yang
Withdrawn before primaries:
John Delaney | Cory Booker | Marianne Williamson | Julian Castro | Kamala Harris | Steve Bullock | Joe Sestak | Wayne Messam | Beto O'Rourke | Tim Ryan | Bill de Blasio | Kirsten Gillibrand | Seth Moulton | Jay Inslee | John Hickenlooper | Mike Gravel | Eric Swalwell | Richard Ojeda | Michael E. Arth
Democratic National Convention
Republican Party:
Donald Trump
Withdrawn during primaries: Bill Weld | Joe Walsh
Withdrawn before primaries: Mark Sanford
Republican National Convention
Libertarian Party:
Jo Jorgensen
Withdrawn during primaries: Adam Kokesh | Arvin Vohra | Dan Bherman | Jacob Hornberger | John McAfee | Lincoln Chafee | Max Abramson | Sam Seder
Withdrawn before primaries: Zoltan Istvan
Green Party:
Howie Hawkins
Lost nomination: Dario Hunter
Other third parties:
Brian Carroll (American Solidarity) | Gloria La Riva (PSL) | Justin Amash | Kanye West (Independent) | Rocky De La Fuente (Alliance Party)
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