The Death Penalty in Arizona: How Capital Cases Work

Which crimes can get the death penalty in Arizona?

The death penalty is the most severe punishment Arizona law allows, and it is also the most narrowly limited. Contrary to a common assumption, the state cannot seek death for kidnapping, armed robbery, drug trafficking, or even most killings. Arizona reserves capital punishment for one offense, first-degree murder, and only when the state proves a specific statutory aggravating circumstance on top of the murder itself. This guide explains which crimes are death-eligible, how the aggravating-circumstances framework works, how the two-phase capital trial unfolds, and how the long appeals process functions, all from a defense perspective.

Only first-degree murder is death-eligible in Arizona. Under A.R.S. 13-1105, first-degree murder is a class 1 felony that is “punishable by death or life imprisonment as provided by sections 13-751 and 13-752.” No other charge in the Arizona criminal code carries a possible death sentence. A person accused of manslaughter, second-degree murder, or negligent homicide is not facing capital punishment, no matter how serious the case. If you are trying to sort out how those charges differ, our explainer on manslaughter versus negligent homicide in Arizona breaks down the lines the statutes draw.

First-degree murder itself covers three situations under the statute: a premeditated killing, a felony murder committed during certain serious felonies such as sexual assault, kidnapping, robbery, or arson, and the intentional killing of a law enforcement officer in the line of duty. But being convicted of first-degree murder does not by itself produce a death sentence. Standing alone, first-degree murder is punished by life imprisonment. The case becomes capital only when the prosecutor files formal notice of intent to seek death and then proves at least one aggravating circumstance.

What are aggravating circumstances?

Aggravating circumstances are specific facts, listed by statute, that make a first-degree murder eligible for a death sentence. A.R.S. 13-751 sets out the complete list, and the prosecution must prove at least one of them beyond a reasonable doubt. If the state cannot prove a single aggravating circumstance, the death penalty is off the table and the sentence is life or natural life. The list is closed, meaning prosecutors cannot invent new aggravators, they must fit the facts into a category the legislature already wrote down.

The statutory aggravating circumstances include factors such as a prior conviction for a serious offense, committing the murder for money or other pecuniary gain, committing it in an especially heinous, cruel, or depraved manner, a victim who was very young or elderly, and the murder of an on-duty peace officer. These are meant to single out a small subset of murders as the worst of the worst. The following table shows several of the aggravating circumstances the statute enumerates.

This table lists representative examples, not the full statutory list. Read the complete set of aggravating circumstances directly in A.R.S. 13-751.

How does a two-phase capital trial work?

A capital case is not one trial but a sequence of separate determinations decided by the same jury. A.R.S. 13-752 lays out this bifurcated structure. First comes the guilt phase, the trial most people picture, where the jury decides whether the defendant is guilty of first-degree murder at all. Only if the jury returns a unanimous guilty verdict does the case move into the sentencing side, which is itself split into an aggravation phase and a penalty phase.

In the aggravation phase, the same jury hears evidence on the alleged aggravating circumstances and must find unanimously, and beyond a reasonable doubt, that at least one aggravator has been proven. If it finds none, the death penalty is unavailable. If it finds at least one, the case proceeds to the penalty phase, where the jury weighs the aggravation against any mitigation and decides whether death is the appropriate sentence. That final decision must also be unanimous.

What role does mitigation play?

Mitigation is the heart of a capital defense. Once the jury has found an aggravating circumstance, the question is no longer guilt but whether the defendant should live. Under A.R.S. 13-751, the jury may consider any factor relevant to whether death is appropriate, and it can impose death only if it finds that there are no mitigating circumstances sufficiently substantial to call for leniency. Mitigation is not an excuse for the crime, it is the full human context a jury is entitled to weigh.

Mitigating evidence can include a defendant’s age, mental health, intellectual functioning, history of abuse or trauma, brain injury, addiction, lack of a serious prior record, or a comparatively minor role in the offense. Two features make mitigation powerful for the defense. The defense need only prove mitigation by a preponderance of the evidence, a far lower bar than the state carries, and the jurors do not have to agree unanimously on a given mitigating factor. A single juror who finds one mitigating circumstance substantial enough for leniency can prevent a death sentence.

What is the appeals and review process for a death sentence?

Every Arizona death sentence goes through an unusually long chain of review, far longer than an ordinary felony sentence. The first step is an automatic direct appeal to the Arizona Supreme Court. This is one of the most common points of confusion, so it is worth stating plainly: a death penalty case is not reviewed by the Arizona Court of Appeals, it goes directly to the Arizona Supreme Court, which reviews the conviction and the sentence together.

If the direct appeal does not overturn the sentence, the case can move into post-conviction relief proceedings in state court, where new issues such as ineffective assistance of counsel or newly discovered evidence can be raised. After state remedies are exhausted, a defendant may pursue federal habeas corpus review in the federal courts. Because of these layered stages, a capital case commonly takes many years, sometimes decades, to move from sentence to any final resolution. That long timeline is part of why capital litigation is its own specialized field within criminal defense.

Is the death penalty still active in Arizona?

Yes. Arizona remains a death penalty state, and it resumed carrying out executions in 2022 after a pause of roughly eight years. During that hiatus the state had not conducted an execution while questions about its lethal-injection procedures were worked through. Since resuming, Arizona has continued to have an active capital punishment system, though its execution protocols have at times been the subject of official review, and the number of new death sentences imposed each year is small compared to the overall volume of serious felony cases.

For someone facing charges, the practical takeaway is that the death penalty in Arizona is not a historical relic, it is a live possibility in the narrow set of first-degree murder cases where the state chooses to seek it. That is precisely why the early decisions in a serious homicide case matter so much, and why they should be made with experienced counsel rather than assumptions about how the system works.

Why is capital defense different from an ordinary case?

Capital defense operates under a different clock and a different standard than any other criminal case. From the moment the state signals it may seek death, the defense is preparing two cases at once: the fight over guilt and the fight over life. Investigators, mitigation specialists, and mental health experts are often involved from the earliest stage, building the record that a jury may eventually weigh in the penalty phase. None of that can be assembled overnight.

It also means that decisions made early, about statements to police, about experts, about what evidence to preserve, can shape the outcome years later. If you or a loved one is facing a first-degree murder allegation or another serious violent charge, the response should be immediate and deliberate. Our Phoenix violent crimes defense and Phoenix manslaughter defense pages explain how we approach the most serious cases, and our broader criminal defense overview covers what to expect from the process. Every case is different, and no lawyer can promise a particular result, but early, focused defense work is where the real difference is made.