Colorado Springs Mayor Lionel Rivera plans to turn in petitions today to get on the August eighth primary ballot to replace retiring Congressman Joel Hefley.
Rivera is one of eight Republicans seeking the Fifth Congressional District seat Hefley's held for 20 years.
His campaign says he'll be the first candidate to officially get on the primary ballot.
On Friday, five candidates will attend the district assembly.
They are John Anderson, Duncan Bremer, Patrick Carter, Jeff Crank and state Sen. Doug Lamborn.
Those who get 30 percent of delegate votes there will get on the ballot.
Retired Major General Bentley Rayburn also is petitioning to get on the ballot.
It's unclear what candidate AJ Towne is doing.
Two Democrats also are running for the seat.