Georgia Gov. Sonny Perdue (R) has moved the special election for Rep. Nathan Deal's seat from April 27 to May 11.
The change was made to allow more time for overseas military ballots to be mailed in.
Candidates still must qualify for the race next week.
The seat is expected to be an easy keep for Republicans. The frontrunners are state Sen. Lee Hawkins, state Rep. Tom Graves and Dr. Chris Cates.