Does Public Opinion Influence the Supreme Court? Possibly Yes (but We’re Not Sure Why)

Using qualitative data and historical methods, Barry Friedman asserts with confidence that “we the people” influence the decisions of the U.S. Supreme Court. Using quantitative data and statistical methods, political scientists are not so sure. Despite their best efforts to validate basic claims about the effect of public opinion on the Court, the evidence remains mixed at best. We enter this dialogue but in a voice distinct from existing political science work. Rather than explore the relationship between the public and the Court on a term-by-term basis, we analyze it at the level of the case. This allows us to exploit more nuanced public opinion data, as well as to attend to the many other case-level factors that may influence the Court’s decisions. Based on our analysis, we are prepared to say that Professor Friedman is on to something. When the “mood of the public” is liberal (conservative), the Court is significantly more likely to issue liberal (conservative) decisions. But why is anyone’s guess. Professor