News ‘It’s a sad day’: As Booker exits Democratic primary, a once-historic field gets less diverse January 13, 2020Rebecca Morin and Deborah Barfield Berry, USA TODAYComments Off on ‘It’s a sad day’: As Booker exits Democratic primary, a once-historic field gets less diverse Less than three weeks before the first votes are cast in Iowa only three non-white Democratic presidential candidates remain.