American National Election Studies
The American National Election Studies (ANES) are the leading academically-run national surveys of voters in the United States, conducted before and after every presidential election. Though the ANES was formally established by a National Science Foundation grant in 1977, the data are a continuation of studies going back to 1948. The study has been based at the University of Michigan since its origin and, since 2005, has been run in partnership with Stanford University. Its principal investigators for the first four years of the partnership were Arthur Lupia and Jon Krosnick. Its current principal investigators are Ted Brader, Vincent Hutchings, Gary Segura, and Simon Jackman. The principal investigators are now Professors Ted Brader and Vincent Hutchings of the University of Michigan and Shanto Iyengar of Stanford University.
The consistency of the studies, asking the same questions repeatedly over time, makes it very useful for academic research with the result that it is frequently cited in works of political science. Early ANES data were the basis for The American Voter (1960). Now ANES data are used by numerous scholars, students, and journalists. It is widely considered the "gold standard" of election studies.
The ANES has a long history of innovation. In 2006, it opened the ANES Online Commons, becoming the first large-scale academic survey to allow interested scholars and survey professionals to propose questions for future ANES surveys.