Officials are letting Democrats put a different nominee in south Mississippi's 4th District congressional race.
State election commissioners voted unanimously to let Michael Herrington of Hattiesburg withdraw and Matthew Moore of Biloxi take his place.
State law says if a party nominee withdraws for a nonpolitical reason such as illness, the party may put a substitute on the ballot.
Herrington filed an affidavit saying he's the main caregiver for his paraplegic mother, whose medical condition has worsened recently.
Also on the Nov. 6 ballot are Republican Rep. Steven Palazzo of Biloxi, Libertarian Ron Williams of Moss Point and Reform Party candidate Robert Claunch of Diamondhead.