Chattanooga Mayor Andy Berke faces three challengers in the upcoming March 7, 2017 election: David Crockett, Larry Grohn, and Chris Long, and voters could unseat several City Council members. Chattanooga Times Free Press opinion writers Pam Sohn, Clint Cooper and David Martin talk about what's at stake, who they're endorsing, and how some challengers might beat the incumbents. Dave Flessner moderates.