Sunday Mexico holds a massive mid-term election with voters casting ballots for every member of the lower branch of Congress, 15 governors and hundreds of mayors . The race for governor of border state Chihuahua is among the most hotly contested. Among the concerns: a concentration of power in one party, Mexico'spresident's party, and violence on the campaign trail. More than 30 candidates have been murdered since April. KTEP’s Angela Kocherga reports on what’s at stake.