It's day three of the Democratic National Convention and Dana once again is in Chicago's United Center, where tonight Kamala Harris' running mate Tim Walz will take center stage. Also scheduled to speak are party elders like Bill Clinton and Nancy Pelosi, along with the next generation of Democratic leaders such as Pete Buttigieg, Josh Shapiro, Amy Klobuchar, and Wes Moore. They all have an incredibly tough act to follow after Barack and Michelle Obama, two of the biggest political stars and best speakers, made impassioned pleas for Kamala Harris to a roaring crowd in their hometown.?