# Arizona Sen Jon Kyl dies at 84 after dementia battle

> Arizona's former senator Jon Kyl dies at 84 after long battle with dementia, leaving legacy of public service and mentorship.
- Title: Arizona Sen Jon Kyl dies at 84 after dementia battle
- Summary: Arizona's former senator Jon Kyl dies at 84 after long battle with dementia, leaving legacy of public service and mentorship. Jon Kyl died at 84 after a…
- Keywords: jon kyl, arizona, senate, dementia, jeff flake, arizona governor, senate minority whip, us house of representatives, water rights, indian water settlements, news, politics
- Source: Fox News — https://foxnews.com/politics/former-gop-whip-arizona-sen-jon-kyl-dead-84
- Author: Robert McGreevy
- Published: 2026-09-17T00:00:00+00:00
- Read time: 1 min
- Topics: jon kyl, arizona, senate, dementia, jeff flake, arizona governor, senate minority whip, us house of representatives, water rights, indian water settlements, news, politics
## Jon Kyl passes away
Former Arizona Sen. Jon Kyl died at 84 after a battle with dementia, announced by his family Thursday.
## Kyl served in Senate for 18 years
Kyl was first sworn in to the Senate in 1995, retiring in 2013, and briefly returned in 2018 after John McCain's death.
## Dementia diagnosis in 2025
Kyl stepped away from public life in December 2025 after receiving a neurological disease diagnosis that led to dementia.
## Kyl's Senate career
Before the Senate, Kyl served in the U.S. House of Representatives from 1987 to 1995.
## Flake's tribute
Former Sen. Jeff Flake praised Kyl's leadership, saying he was 'one of the most diligent and effective public servants Arizona has ever had.'

> Arizona has lost a giant. Jon Kyl was one of the most diligent and effective public servants Arizona has ever had.
## Kyl's water rights work
Kyl secured nine Indian water settlements, helping tribes in Arizona access water while supporting state sustainability.
## Kyl's mentorship
Kyl mentored Jeff Flake, advising him to keep family informed about political work, a lesson Flake followed throughout his career.
## Key takeaway

Jon Kyl died at 84 after a battle with dementia, remembered for his leadership in Arizona and Senate service.