Thin? It's still 1 3/4 years away and we've already had 8 say they are running:
Kirsten Gillibrand
Bernie Sanders
Elizabeth Warren
Kamala Harris
Julian Castro
Tulsi Gabbard
John Delaney
Pete Buttigieg
And there are at least another 20 that said they are looking at it:
Joe Biden
Cory Booker
Jeff Merkley
Amy Klobuchar
Michael Bennet
Jay Inslee
Steve Bullock
Terry McAuliffe
John Hickenlooper
Beto O’Rourke
Michael Bloomberg
Eric Holder
Tom Steyer
Eric Swalwell
Tim Ryan
Joe Kennedy III
Seth Moulton
Bill de Blasio
Eric Garcetti
Mitch Landrieu
I agree, it's still a weak crrowd, but it's not thin.