State election commissioners have delayed a decision on whether to let Democrats replace their nominee in south Mississippi's 4th Congressional District.
Commissioners meet again Wednesday to discuss the issue.
In March, Michael Herrington of Hattiesburg won the Democratic nomination to challenge Republican U.S. Rep. Steven Palazzo. But Herrington recently filed a sworn statement saying he's leaving the race because his mother is ill.
State law says if a nominee withdraws for a nonpolitical reason such as illness or family crisis, a party can put a different nominee on the ballot.
Democrats say they intend to put Matthew Moore of Biloxi, a community college student, in Herrington's place.
The two Republicans on the Election Commission, Gov. Phil Bryant and Secretary of State Delbert Hosemann, say they want to verify Herrington's affidavit.