Voters in central Tennessee are heading to the polls for a special election that could be a bellwether for how party control in the U.S. House.

Tennessee's 7th congressional district has become competitive after polling tightened between Republican Matt Van Epps and Democrat Aftyn Behn.

Voters in central Tennessee are heading to the polls for a special election that could be a bellwether for how party control in the U.S. House.