Super Tuesday brought some excitement to this year’s election cycle, with a lot of consequential downballot races. House Republicans are hoping to keep their slight margin, where Democrats only need a net gain of four seats to regain control of the chamber. Senate Democrats, however, are facing an extremely tough map, with Republicans well positioned to win the majority.    Cook Political Report’s Erin Covey and Jess Taylor cover House and Senate campaigns, respectively, and join CNN Political Director David Chalian to talk about what’s heating up in this year’s Congressional races. Learn more about your ad choices. Visit podcastchoices.com/adchoices