You don't have to be a political scientist to see there's something unique about the field of 2020 Democratic presidential candidates: Three major candidates - and arguably the most viable and influential people who have announced campaigns so far - are women.
The first U.S. senators to announce their presidential bids are Democrats Elizabeth Warren, Kirsten Gillibrand, and Kamala Harris - all Democratic women. (Democratic Rep. Tulsi Gabbard has also announced a run, but her past opposition to gay rights has disqualified her among most Democratic voters. Recent reports say the Gabbard campaign is already in peril.