Ideological Determinants of Citations to Supreme Court Precedent Across the Federal Judiciary

How do ideological factors explain the citation patterns of federal courts? Current literature uses citation data in myriad ways but leaves open the question of how ideological factors may influence citation from each level of the judicial hierarchy differently. Combining original data on citations to Supreme Court opinions by district courts from 1969 to 2005 with existing data on citations by the courts of appeals and Supreme Court, I present a more complete portrait of the scope of a precedent across the federal judiciary. I find that ideological factors are associated with differences in citing behavior on the federal courts. Both the appellate and district courts are responsive to Supreme Court precedent, but district courts are not equally responsive to liberal and conservative updates to doctrine. Further, as the Supreme Court ideology changes from the time of setting precedent, appellate courts are less likely to cite the precedent, but district courts cite it more. These results suggest that the relationship between ideology and precedent adherence is complicated by the distinct institutional features of the Supreme Court, courts of appeals, and district courts.