Two Democratic challengers are facing off against incumbent Rep. Stephen Lynch.

Lynch, a South Boston Democrat and former ironworker, has held the seat since 2001.

Brianna Wu, a Dedham resident, is a video game developer who co-founded the independent gaming firm Giant Spacekat.

Christopher Voehl, a Milton resident, is a former fighter pilot.

The Eighth Congressional District includes parts of Boston, as well as the cities of Quincy and Brockton and 21 Southeastern Massachusetts towns.

There is no GOP challenger on the Nov. 6 general election ballot.