Marge Simpson voice is performed by Julie Kavner, who also does the voices of Marge's mother Jacqueline and her sisters Patty and Selma. Kavner had been part of the regular cast of "The Tracey Ullman Show". Voices were needed for the shorts, so the producers decided to ask Kavner and fellow cast member Dan Castellaneta to voice Marge and Homer rather than hire more actors. Part of Kavner's contract says that she will never have to promote "The Simpsons" on video and she rarely performs Marge's voice in public because she believes it "destroys the illusion. People feel these are real people."
The War of the Simpsons is one of the few times in the history of the show that Kavner has voiced a character other than Marge and her relatives. Gloria's hair was based on Kirkland's assistant director Susie Dietter's hair. "The Simpsons" writer Mike Reiss said on the episode's DVD audio commentary that while the episode was "full of funny moments", it caused "nothing but trouble" to the staff of the show. One of the troubles was that after the episode had been written by Swartzwelder, an unsolicited writer sent the staff a script which contained a virtually identical story. To avoid a lawsuit, the