Ryan v. Powell’s Empirical Analysis
1999
Citation profile
37 federal appellate · 11 district · 115 state decisions
How this case has been cited
Cited by 208 later decisions (2 by the Supreme Court) — most recently February 2026 · most notably United States of America v. Tommy Don Cockerham (2001), Henrietta v. Bloomberg (2003)
37 federal appellate · 11 district · 115 state decisions — followed in 16 states
Later decisions citing this case, by decade. The current decade is in progress, and our corpus holds fewer opinions from the most recent years, so the latest bars are undercounted — not a real decline.
Relationships
Relies on David Powell v. Thomas J. Ridge
How this case has been treated — in progress
Whether each later court followed, distinguished, criticized, or overruled this decision. The treatment classification (task #35) runs highest-cited cases first and lights up here as it reaches this one.