Jon Kyl, a towering figure in Arizona and national politics who served nearly three decades in the United States Congress, passed away at the age of 84. His family announced his death on Thursday, September 17, 2026, stating he died the previous day, Wednesday, September 16, from complications related to a neurological disease. Kyl had stepped away from public life in December 2025 after disclosing a dementia diagnosis.
"Arizona has lost one of its finest statesmen." Arizona Senate Republicans
Tributes quickly flowed from across the political spectrum, recognizing Kyl's extensive career and impact. Arizona Senate Republicans issued a statement calling him "one of its finest statesmen," praising his combination of "conservative conviction with an extraordinary command of policy and a deep respect for public service."
Kyl's career in public service began in the U.S. House of Representatives, where he represented Arizona’s 4th Congressional District starting in 1987 after winning election a year prior. He served four terms in the House before successfully running for an open Senate seat in 1994. From 1995 until his initial retirement in 2013, Kyl was a prominent member of the U.S. Senate, eventually ascending to the position of Senate Republican Whip, making him the second-highest-ranking Republican in the chamber.
Throughout his tenure in the Senate, Kyl was instrumental in shaping debates and legislation on critical national issues. He was a key voice on national security, tax policy, immigration reform, and judicial nominations. His deep expertise and measured approach earned him respect from colleagues on both sides of the aisle. Beyond national policy, Kyl became particularly synonymous with Arizona's complex water issues. He played a pivotal role in negotiating intricate agreements concerning water access and tribal water rights, which profoundly shaped the state's development for decades. Among his most significant achievements in this area was his work on a landmark 2004 water settlement involving the Gila River Indian Community, a testament to his ability to forge consensus on challenging, long-standing problems. Arizona State University later honored his contributions by naming its Kyl Center for Water Policy after him.
Kyl's retirement from the Senate in 2013 was not his final act in Washington. Following the death of his longtime colleague and friend, Senator John McCain, in August 2018, then-Arizona Governor Doug Ducey appointed Kyl to temporarily fill the vacant Senate seat. Kyl returned to Washington in September 2018, serving for several months before resigning at the end of that year. His brief return underscored his commitment to public service during a critical time for his state. During this period, Kyl also played a significant, albeit behind-the-scenes, role in the contentious 2018 Supreme Court confirmation process for Justice Brett Kavanaugh, guiding Kavanaugh through crucial meetings with senators. Republican Martha McSally was subsequently appointed to the seat following Kyl's departure.
Political figures from both parties expressed their condolences and admiration for Kyl. Democratic Arizona Governor Katie Hobbs remembered him as a dedicated public servant. Former Republican Senator Jeff Flake characterized Kyl as an important figure in Arizona's political history. Senate Majority Leader John Thune (R-S.D.) paid tribute to Kyl as a close friend and a committed legislator. Arizona Senate Republicans reiterated that Kyl’s approach to policymaking and public service continues to serve as an example for state lawmakers, stating, "Senator Kyl understood that public service is about more than holding office. It is about protecting the country, solving difficult problems, and leaving the next generation stronger than the one before it."
Jon Kyl is survived by his wife, Caryll, their children, and grandchildren. His passing marks the end of an era for Arizona and the U.S. Senate, leaving behind a legacy defined by conservative principles, legislative acumen, and a profound dedication to public service.
