Koi to Senkyo to Chocolate follows the protagonist Yūki Ōjima, who attends Takafuji Private Academy a large school with over 6,000 students. Yūki is a member of the Food Research Club 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.