Republicans want to make sure the most vulnerable Democrats they’ve failed to take out in the past don’t survive again next year.

The National Republican Congressional Committee on Thursday will launch Red Zone, a program aimed at unseating seven elusive House Democratic incumbents who occupy conservative districts.

The seven Democrats whom Red Zone will focus on are: John Barrow of Georgia, Jim Matheson of Utah, Ann Kirkpatrick and Ron Barber, both of Arizona, North Carolina’s Mike McIntyre, West Virginia’s ...