tomorrow morning, sub-freezing temperatures in a nashville. certainly could see frost around here. if you're planning to go to the nats parade, don't set up too early, but it will rebound back to around 50 degrees by the time it kicks off. >> a lot of fans celebrating the nats. ginger, thank you. and a breaking headline about the race for 2020. former congressman beto o'rourke announcing he's dropping off the race. coming just hours after elizabeth warren described her plans to pay for medicare for all. joe biden's campaign calling it mathematical gymnastics. here's terry moran. >> reporter: he was once heralded as the new face of the democratic party, but tonight, beto o'rourke is out. the candidate tweeting, our campaign has always been about seeing clearly, speaking honestly, and acting decisively. in that spirit, i am announcing that my service to the country will not be as a candidate or as the nominee. the former texas congressman joined the race with great fanfare, but he never caught on with voters. after the mass shooting in his hometown of el paso in august,