A joint investigation by ProPublica and ABC15 Arizona reviewed more than 300 cases over the past two decades where Maricopa County prosecutors sought the death penalty and found that only 13% resulted in death sentences. In most cases a jury never got close to considering whether to sentence someone to death: in more than three-quarters of cases, defendants pled guilty in exchange for lesser punishment, or prosecutors reversed course before trial. In only 41 of 76 cases (54%) that went all the way to a capital trial did a jury sentence someone to death. The remaining 35 trials ended with the jury finding the defendant not guilty, or finding them guilty but rejecting or deadlocking on the death penalty. Former County Attorney Rick Romley, after reviewing the investigation’s findings, called for a review of the office’s capital charging decisions. “The jury is kind of a barometer of whether or not you’re doing a good job,” he said. “And quite frankly…if it was a school grade, that’s called an F.”
“The jury is kind of a barometer of whether or not you’re doing a good job…And quite frankly…if it was a school grade, that’s called an F.”
ProPublica and ABC15 also reviewed the transparency of capital charging practices among the largest prosecutorial offices in Arizona and across the United States. In Maricopa County, a Capital Review Committee evaluates cases and recommends to the County Attorney whether to pursue the death penalty. The reporters found practices varied widely across the state and the country, but even so, Maricopa County stood out as an outlier for “obscuring nearly every aspect” of the Capital Review Committee’s work. While many major prosecutors’ offices across the country outline at least some aspects of how they choose to pursue the death penalty, Maricopa withholds virtually all details about its internal committee membership or decision criteria.
The investigative report also drew attention to the cost to taxpayers of pursuing capital cases. Nationally, studies show capital cases can cost up to three times more than noncapital cases. The report recounted the case of Jodi Arias, who was convicted in 2013 for killing her boyfriend. Maricopa County prosecutors twice sought the death penalty for Ms. Arias, and twice the jury deadlocked. She was finally sentenced to life in prison. According to officials at the time, the two trials cost the county $3.2 million. The total cost of the death penalty in Maricopa County is unknown because the county attorney’s office does not generally track how much it spends prosecuting capital cases.
Nicole Santa Cruz and Dave Biscobing, Arizona’s Largest County Frequently Pursues the Death Penalty. It Rarely Secures That Sentence., ProPublica, June 9, 2025.