The life, culture and politics of voters across the Rio Grande Valley

Texas's Rio Grande Valley is diverse and politically powerful. Until recently, the nation's two political parties saw the voters of the Rio Grande as a monolith. But that's been changing over the past two election cycles. We look at why Republicans and Democrats are working to woo voters along the Rio Grande. Cynthia Villarreal, Xavier Villarreal, Michael Rodriguez, Rogelio Nuñez and Perla Bazan join Meghna Chakrabarti.