Overton Window

Origins and structure

The Overton window was devised in the 1990s by Joseph Overton, a vice president of the Mackinac Center for Public Policy, a think tank in Michigan; after his death in an accident in 2003, colleagues such as Joseph Lehman (2010) set it out and publicized it. If the possible positions on a policy issue are arranged along a line, there is a narrow segment that politicians can support without electoral penalty. The degrees are often described as "unthinkable," "radical," "acceptable," "sensible," "popular" and "policy." The central claim is that politicians generally move within the window rather than moving it, and that the window itself shifts with public opinion and the social climate, which is why think tanks, social movements, the media and intellectuals are seen as widening the range of thinkable ideas.

Relation to other theories

Although it began as a practical metaphor rather than an academic theory, the Overton window touches several theories in political science and communication. John Kingdon (1984) argued that a "policy window" opens when the streams of problems, policies and politics converge. Bachrach and Baratz (1962) described the "two faces of power," including the power to keep issues off the agenda entirely. McCombs and Shaw's (1972) agenda-setting theory, framing and media gatekeeping explain which issues and perspectives enter public debate. Noelle-Neumann's (1974) spiral of silence and Timur Kuran's (1995) "preference falsification" describe how people hide their true views for fear of isolation and then suddenly voice them when norms change. Peter Hall (1993) argued that shifts in policy paradigms occur through ideas and social learning.

Evidence and limits

Recent research tries to measure shifts in the window. Bursztyn, Egorov and Fiorin (2020) showed experimentally that after the 2016 U.S. presidential election result became known, the social cost of publicly expressing anti-immigrant views fell. Bischof and Wagner (2019) found that voters' ideological distribution polarized after a radical right party entered parliament, and Valentim (2021) argued that hidden radical preferences are revealed once such parties succeed. Tankard and Paluck (2016) reviewed how perceptions of what others think drive social change. Critics note that the Overton window can explain almost anything after the fact and so has weak predictive power, that its boundaries are hard to define objectively, and that it reduces complex issues to a single ideological line. It is also often used rhetorically in political debate to accuse opponents of normalizing extreme positions.

FAQ

Who came up with the Overton window?

Joseph Overton of the Mackinac Center for Public Policy devised it in the 1990s, and colleagues set it out and popularized it after his death; it is named after him.

How does the Overton window shift?

It is thought to shift as public opinion, social norms, events, social movements, media coverage and political successes change the range of ideas people consider acceptable, though measuring that process precisely is difficult.

Sources reviewed: 2026-10-26

References

1. Lehman, J. G. (2010). An introduction to the Overton window of political possibility. Midland, MI: Mackinac Center for Public Policy.
2. Russell, N. (2006). An introduction to the Overton window of political possibilities. Midland, MI: Mackinac Center for Public Policy.
3. Kingdon, J. W. (1984). Agendas, Alternatives, and Public Policies. Boston: Little, Brown.
4. Noelle-Neumann, E. (1974). The spiral of silence: A theory of public opinion. Journal of Communication, 24(2), 43–51.
5. Bachrach, P., & Baratz, M. S. (1962). Two faces of power. American Political Science Review, 56(4), 947–952.
6. McCombs, M. E., & Shaw, D. L. (1972). The agenda-setting function of mass media. Public Opinion Quarterly, 36(2), 176–187.
7. Hall, P. A. (1993). Policy paradigms, social learning, and the state: The case of economic policymaking in Britain. Comparative Politics, 25(3), 275–296.
8. Bursztyn, L., Egorov, G., & Fiorin, S. (2020). From extreme to mainstream: The erosion of social norms. American Economic Review, 110(11), 3522–3548.
9. Valentim, V. (2021). Creating critical mass: Preference falsification and the radical right. Working paper, European University Institute.
10. Bischof, D., & Wagner, M. (2019). Do voters polarize when radical parties enter parliament? American Journal of Political Science, 63(4), 888–904.
11. Kuran, T. (1995). Private Truths, Public Lies: The Social Consequences of Preference Falsification. Cambridge, MA: Harvard University Press.
12. Tankard, M. E., & Paluck, E. L. (2016). Norm perception as a vehicle for social change. Social Issues and Policy Review, 10(1), 181–211.