Incumbent Republican Rep. Lee Terry is facing four challengers, the most since he first sought the seat in 1998.
Terry will face Omaha financial adviser and former Nebraska backup quarterback Brett Lindstrom; Omaha mathematics professor Jack Heidel; former Air Force Master Sgt. Glen Freeman; and railroad worker Paul Anderson.
Former Nebraska GOP chairman David Kramer says that could help Terry, because the four challengers will likely split the vote, improving Terry's odds of winning.
The Republican nominee will face either Douglas County Treasurer John Ewing or state Sen. Gwen Howard in the general election.
Nebraska's other House incumbents, Rep. Jeff Fortenberry and Rep. Adrian Smith, face only token opposition.