Markers are already being laid down along racial and gender lines that could restrict Dem options for assembling a 2020 ticket. On Joy Reid's MSNBC show this morning, guest Jason Johnson warned: JASON JOHNSON: What's the most important constituency for Democrats in 2020? Black women. And I've heard plenty of black women say, if there's not a black woman on this ticket, I'm not voting, I'm not excited, I'm not enthusiastic."If the Democratic party wants to run seriously in 2020, they can't relegate black women to second class.