The Center for Election Science (CES) is a nonprofit organization that campaigns for electoral reform in the United States. It advocates cardinal voting methods, with an emphasis on approval voting.

Evaluation

CES has received over $2.4 million in grants from Open Philanthropy (Open Philanthropy 2017; Open Philanthropy 2019). The organization was involved in campaigns to help pass approval voting in the cities of Fargo, North Dakota and St. Louis, Missouri (Piper 2018; Rakich 2021). Both campaigns were successful. In November 2021, CES launched a campaigning to get approval voting adopted in Seattle, Washington in the November 2022 election (Piel 2021).