He’s finally announced:

Beto O’Rourke enters the 2020 race as the wildcard candidate

I am running to serve you as the next president. The challenges we face are the greatest in living memory. No one person can meet them on their own. Only this country can do that, and only if we build a movement that includes all of us. Say you’re in: https://t.co/EKLdkVET2u pic.twitter.com/lainXyvG2n

— Beto O’Rourke (@BetoORourke) March 14, 2019