Sen. Petersen Takes Charge of Critical State and National Legislation Amid AG Mayes’ Absence

By Daniel Stefanski |

In a striking move that underscores his influence in Arizona politics, Senate President Warren Petersen is stepping into the role of a missing attorney general to defend critical state and national laws. Recently, Petersen joined a panel with three state attorneys general during an event hosted by the Republican Attorneys General Association. He emphasized his unique position, stating, “Thanks to the foresight of a prior legislature (see ARS 12-1841), I have been given standing to step in and defend our laws when our current AG fails.”

Petersen’s engagement signals a prominent shift in Arizona’s political landscape, particularly ahead of the anticipated 2026 election for the state’s top prosecutor. His collaboration with attorneys general from New Hampshire, South Dakota, and Kansas highlights the burgeoning potential of his candidacy. Over the last two years, Petersen has navigated Arizona’s divided government, compelling Democrat Governor Katie Hobbs to compromise on key budget priorities while opposing progressive initiatives.

Under Petersen’s leadership, the Arizona Legislature has aligned with over fifty legal matters nationwide, taking part in lawsuits, amicus briefs, and various legal interventions. His defense of at least five state laws rejected by Democrat Attorney General Kris Mayes showcases his proactive stance in state governance. With a growing list of briefs initiated by Republican attorneys general, Petersen is gaining valuable experience that could serve him well in a bid for attorney general.

Support for Petersen appears strong within multiple factions of the Arizona Republican Party, potentially reducing the risk of a competitive primary. Meanwhile, he has publicly acknowledged the backing of 24 attorneys general who submitted amicus briefs to the Supreme Court for the case involving Arizona’s Save Women’s Sports Act—an initiative he claims Mayes declined to defend.

The upcoming years promise to be dynamic as legal roles may shift with the arrival of the Trump administration in January. Petersen is likely to forge stronger alliances with Republican counterparts to support the new administration’s policies, while Mayes will be poised to challenge these actions on behalf of the Democrats. This emerging legal landscape will offer Arizona voters a clearer view of their respective values as the state navigates complex policy challenges ahead.

Daniel Stefanski is a reporter for AZ Free News.