Title: The Parent Plot
First published: 1990
Description: Jessica and Elizabeth Wakefield's father is running for mayor of Sweet Valley. The twins are hard at work on his campaign--but they're taking opposite sides in an even bigger contest: a contest to bring romance into their parents lives.

Even though Mr. and Mrs. Wakefield separated only recently, Jessica thinks it's time for them to start dating other people--and she's going to make sure that's exactly what happens.

But Elizabeth is just as determined to get her parents back together. She's thinking up some romantic schemes of her own. It's Jessica versus Elizabeth--may the best twin win!