Executions

Methods of Execution

Lethal injection is the most widely-used method of execution, but many states authorize other methods including electrocution, lethal gas, and firing squad.

Overview

The pri­ma­ry means of exe­cu­tion in the U.S. have been hang­ing, elec­tro­cu­tion, the gas cham­ber, fir­ing squad, and lethal injec­tion. The Supreme Court has nev­er found a method of exe­cu­tion to be uncon­sti­tu­tion­al, though some meth­ods have been declared uncon­sti­tu­tion­al by state courts. The pre­dom­i­nance of lethal injec­tion as the pre­ferred means of exe­cu­tion in all states in the mod­ern era may have put off any judg­ment by the Court regard­ing older methods.

Because of a resis­tance by drug man­u­fac­tur­ers to pro­vide the drugs typ­i­cal­ly used in lethal injec­tions, some states now allow the use of alter­na­tive meth­ods if lethal injec­tion can­not be per­formed. Controversies sur­round­ing the method to be used have delayed exe­cu­tions in many states, con­tribut­ing to an over­all decline in the use of the death penalty.

Authorized Methods

NOTE: [Brackets] around a state indi­cate that the state autho­rizes the list­ed method as an alter­na­tive method if oth­er meth­ods are found to be uncon­sti­tu­tion­al or are unavailable/​impractical. Click on the state to obtain spe­cif­ic infor­ma­tion about the meth­ods autho­rized.
 

Method# of exe­cu­tions by method since 1976# of states autho­riz­ing methodJurisdictions that Authorize
Lethal Injection1431

28 states+ and U.S. Military and U.S. Gov’t

In South Carolina, lethal injec­tion may be elect­ed as an alter­na­tive method, if available.

+includes 1 state that no longer have an active death penalty

Alabama, Arizona, Arkansas, California, Florida^, Georgia, Idaho, Indiana, Kansas, Kentucky, Louisiana, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire*, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, [South Carolina], South Dakota, Tennessee^, Texas, Utah, Wyoming, U.S. Military, U.S. Government

*New Hampshire abol­ished the death penal­ty but the repeal may not apply retroac­tive­ly, leav­ing a pris­on­er on death row fac­ing possible execution.

To find the drug pro­to­cols used by states, see State-by-State Lethal Injection.

Electrocution1639 states (in South Carolina, elec­tro­cu­tion is the default method; the oth­er 8 have lethal injec­tion as default method).

[Alabama], [Arkansas], Florida, Kentucky, [Louisiana], [Mississippi], [Oklahoma], South Carolina, [Tennessee]

The supreme courts of Georgia (2001) and Nebraska (2008) have ruled that the use of the elec­tric chair vio­lates their state con­sti­tu­tion­al pro­hi­bi­tions against cru­el and unusual punishment.

Virginia had autho­rized the elec­tric chair as a method of exe­cu­tion in some cas­es, but it repealed the death penal­ty in March 2021.

Lethal Gas168 states (all have lethal injec­tion as default method)

[Alabama], Arizona, California, [Louisiana], [Mississippi], Missouri, [Oklahoma], [Wyoming]

Four states (Alabama, Louisiana, Mississippi, and Oklahoma) specif­i­cal­ly autho­rize exe­cu­tion by nitro­gen hypox­ia. Alabama and Louisiana have issued a pro­to­col for its use. Alabama is the only state that has per­formed an exe­cu­tion by nitro­gen hypox­ia. Alabama and Louisiana specif­i­cal­ly autho­rize nitro­gen hypox­ia; oth­er states list­ed autho­rize ​“lethal gas,” but do not spec­i­fy what type of gas would be used.

Firing Squad45 states (in South Carolina, elec­tro­cu­tion is the default method; the oth­er states have lethal injec­tion as primary method)[Mississippi], [Oklahoma], [Utah], [South Carolina], [Idaho]

^Both Florida and Tennessee explic­it­ly autho­rize lethal injec­tion and elec­tro­cu­tion, but state that, if those meth­ods are found uncon­sti­tu­tion­al, pris­on­ers may be exe­cut­ed by any con­sti­tu­tion­al method of execution.

News & Developments

News

Mar 19, 2025

Louisiana Resumes Executions After 15-Year Hiatus with First Nitrogen Gas Execution

After a series of last-minute legal chal­lenges, cul­mi­nat­ing with a denial of stay from the U.S. Supreme Court, Louisiana exe­cut­ed Jessie Hoffman on March 18, 2025. Mr. Hoffman’s exe­cu­tion marked both the state’s first exe­cu­tion in 15 years and the state’s first exe­cu­tion using nitro­gen gas — only the sec­ond state to use this new method. State offi­cials acknowl­edged that Mr. Hoffman exhib­it­ed​“con­vul­sive activ­i­ty” as he inhaled nitro­gen gas through a mask while…

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News

Mar 18, 2025

Nine Tennessee Death Row Prisoners Challenge State’s One-Drug Lethal Injection Protocol, Citing ​“High Risk of Torturous Death”

On March 14, 2025, a group of nine death row pris­on­ers in Tennessee filed a law­suit chal­leng­ing the state’s sole use of pen­to­bar­bi­tal in its revised lethal injec­tion pro­to­col, argu­ing it cre­ates a​“high risk of a tor­tur­ous death.” In December 2024, the Tennessee Department of Correction (TDOC) com­plet­ed a mul­ti-year lethal injec­tion pro­to­col review and announced that instead of the pre­vi­ous three-drug pro­to­col, the state would shift to rely on just one drug:…

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Five vials of clear liquid, varying sizes. One is on its side with a syringe in it.

News

Mar 17, 2025

Idaho Governor Signs Legislation Authorizing Firing Squad as State’s Primary Execution Method

On March 12, 2025, Idaho Governor Brad Little (pic­tured) signed House Bill 37 into law, mak­ing the fir­ing squad the state’s pri­ma­ry method of exe­cu­tion. In a state­ment to Catholic News Agency, Gov. Little said,​“I have long made clear my sup­port of cap­i­tal punishment…My sign­ing of [this bill] is con­sis­tent with my sup­port of the Idaho Legislature’s actions in set­ting the poli­cies around meth­ods of exe­cu­tion in the state of Idaho.” The bill, which takes effect on July 1,…

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News

Mar 12, 2025

Courts Put Upcoming Texas, Louisiana Executions on Hold

On March 11, in sep­a­rate deci­sions, a fed­er­al court in Louisiana and the Texas Court of Criminal Appeals (TCCA) stayed the upcom­ing exe­cu­tions of David Wood (sched­uled for exe­cu­tion in Texas on March 13) and Jessie Hoffman (sched­uled for exe­cu­tion in Louisiana on March 18). In Mr. Wood’s case, the TCCA grant­ed a stay of exe­cu­tion to allow the state more time to address the eight claims Mr. Wood assert­ed in his state habeas claim. In Mr. Hoffman’s case, the U.S. District Court for the Middle…

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