NBC News’ Steve Kornacki details what to look for as the polls close in the special election for Tennessee’s 7th Congressional District.

After months of campaigning, canvassing and endorsements, Republican Matt Van Epps claims the win for the 7th Congressional District seat over challenger Democrat Aftyn Behn.

The critical race, which has drawn national attention, will see Republican nominee Matt Van Epps and Democratic nominee Aftyn Behn face off in the general election as both parties vie for momentum ahe...