A manga adaptation illustrated by Tōko Kanno titled Koi to Senkyo to Chocolate began serialization in the February 2011 issue of ASCII Media Works' Dengeki G's Magazine. The first tankōbon volume was released on July 27, 2011; the second followed on February 27, 2012. A second manga illustrated by Waki Ikawa titled Koi to Senkyo to Chocolate SLC (SLC stands for Stay Little Cat) began serialization in the May 2011 issue of ASCII Media Works' Dengeki Daioh. The first volume for SLC was released on September 27, 2011; the second volume was published on February 27, 2012. Two volumes of a manga anthology titled Koi to Senkyo to Chocolate Comic Anthology were released by Ichijinsha between April and July 2011.
Koi to Senkyo to Chocolate follows the protagonist Yūki Ōjima, who attends Takafuji Private Academy(私立高藤学園Shiritsu Takafuji Gakuen), a large school with over 6,000 students. Yūki is a member of the Food Research Club (食品研究部Shokuhin kenkyū-bu), also known as "Shokken" (ショッケン) for short, along with seven others, including his childhood friend Chisato Sumiyoshi. The members leisurely spend their time in the club not doing much activities. When the election of the next student council president comes up, the front runner Satsuki Shinonome proposes that clubs that have no merit should be sorted out and abolished. The Food Research Club seeks advice from the current student council president Yakumo Mōri, who suggests Yūki run in the election as an opposing candidate. Yūki learns about the issues facing the school and decides to run in the election.