Senator Michael Bennet of Colorado; former Vice President Joseph R. Biden Jr.; Senator Cory Booker of New Jersey; Mayor Pete Buttigieg of South Bend, Ind.; former housing secretary Julián Castro; Mayor Bill de Blasio of New York; former Representative John Delaney of Maryland; Representative Tulsi Gabbard of Hawaii; Senator Kirsten Gillibrand of New York; Senator Kamala Harris of California; former Gov. John Hickenlooper of Colorado; Gov. Jay Inslee of Washington; Senator Amy Klobuchar of Minnesota; former Representative Beto O’Rourke of Texas; Representative Tim Ryan of Ohio; Senator Bernie Sanders of Vermont; Representative Eric Swalwell of California; Senator Elizabeth Warren of Massachusetts; the self-help author Marianne Williamson; and the former tech executive Andrew Yang.
Second night June 27 looks best.