US Election Special: Colorado's Swinging Demographics

Dan examines the politics of this important state that is edging closer to the Democrats - he asks if evangelical Christians are losing their influence. And he meets a woman still healing from the horror of the Columbine massacre 17 years ago.

(Picture: Drive-through ballot box in City of Lone Tree, Douglas County, Colorado, where in-person polls opened on Monday 24 October. Colorado is one of 37 states with early voting. Credit: Irene Chang/BBC)