For the 6th Congressional district, the big game changer is Aurora. In redistricting, the new boundaries take out a big chunk of Republican Douglas county to the south and replaced it with the more working class and Democratic north Aurora.
Aurora, Colo., became a familiar name this summer, in the wake of a mass shooting at a local movie theater.
But there's much more to this Denver suburb than the recent tragedy. Just ask Ethiopian immigrant Fekade Balcha. Balcha's apartment, on Aurora's north side, sits in a dense neighborhood of squat brick apartment buildings and tiny homes.
"You see, in our apartment, there are Russians, Mexicans, Africans," Balcha says. "From Ethiopia, Somalia, Nigeria, and something like that."