Charlotte is basically kind of like Nashville, with the suburban counties generally outvoting the main county. Mecklenburg is obviously the Davidson of the state, meanwhile Cabarrus is basically Rutherford and Union is Williamson. Iredell and Gaston are like Sumter and Wilson.
A lot of people have asked me why Tennessee hasn't shifted towards the Democrats despite Nashvile have explosive growth similar to Atlanta.
Well, the city isn't really growing. The suburbs are exploding. And while a lot of young people are moving to Nashville from around the country, a huge part of that growth are middle and upper class families who like the weather and no state tax. Think Texas, not Georgia or Arizona.