Barbarians the bloody yanks absolute sodding savages, no other word for them!..
US Republican Senator Marsha Blackburn, who is running for Tennessee governor, described the situation as "tragic".
"While there should be a thorough review of what happened and why the process failed, the answer is simple: bring back the electric chair," Blackburn said.
Democrat Jerri Green, Blackburn's opponent, criticized her for wanting to "bring back one of the most cruel forms of capital punishment".
"As governor, I would put a moratorium on all future executions," Green said on X.
This is the second time in 2026 Tennessee officials attempted and failed to execute a prisoner.
In May, the execution of Tony Carruthers was called off after staff were unable to find a vein to administer a lethal drug. Carruthers was given a one-year reprieve.