Usage of lethal injection chair for the death penalty in the United States.

  State uses only this method.
  State uses this method primarily but has secondary methods.
  State once used this method, but does not anymore.
  State once adopted this method, but dropped before its use.
  State has never used this method.
U.S. military: only lethal injection
Federal government: lethal injection as a primary method; retains secondary methods
Map from Blank US Map.svg by Theshibboleth.
Information from US lethal injection usage.png by Shadowlink1014 who credited deathpenaltyinfo.msu.edu as the source.
New colours by MissMJ
Combined by Lokal_Profil
Lokal_Profil