Here is a list of all 28 Candidates who decided to run for the Democratic Presidential Primary, including both those still active and those who have dropped out. Active candidates also have the latest Real Clear Politics average by their names:

[link:https://www.realclearpolitics.com/epolls/2020/president/us/2020_democratic_presidential_nomination-6730.html|

Joe Biden.............Active 29.3
Bernie Sanders.......Active 20.3
Elizabeth Warren......Active 14.8
Pete Buttigieg..........Active 7.5
Michael Bloomberg.....Active 5.8
Andrew Yang.............Active 3.5
Amy Klobuchar...........Active 2.8
Tom Steyer................Active 2.2
Tulsi Gabbard..............Active 2.3
Cory Booker.................Active 1.8
John Delaney................Active 0.8
Michael Bennet...............Active No polling percentage listed
Deval Patrick...................Active No Polling percentage listed
Marianne Williamson..........Dropped
Julian Castro...................Dropped
Kamala Harris..................Dropped
Steve Bullock.................Dropped
Joe Sestak....................Dropped
Wayne Messam..............Dropped
Beto O'Rourke...............Dropped
Tim Ryan.....................Dropped
Bill de Blasio................Dropped
Kirsten Gillibrand.........Dropped
Seth Moulton............Dropped
Jay Inslee................Dropped
John Hickenlooper.....Dropped
Mike Gravel.............Dropped
Eric Swalwell..........Dropped

An argument could possibly be made for Klobuchar and Steyer to stay in, especially since they both made the latest debate, but Gabbard, Booker, Delaney, Bennet, and Patrick really have about zero chance. Democrats want nothing to do with Gabbard. Booker has missed his chance this time. No one is really paying much attention to Delaney. As for Bennet and Patrick, Real Clear Politics isn't even bothering to track them. Of course, RCP hasn't even bothered to remove Harris or O'Rourke from its board, so maybe they are just tad lazy.