Mark Kelly is the senior United States Senator from Arizona, having served in the Senate since 2020. A member of the Democratic Party, he was born in Orange, New Jersey, in 1964 and is a graduate of the United States Naval Academy. He served as a naval aviator, flew combat missions during the Gulf War, and later became a NASA astronaut, logging more than 50 days in space across four shuttle missions including as commander of the final flight of Space Shuttle Endeavour. He is the husband of former Representative Gabrielle Giffords, who was critically wounded in a 2011 assassination attempt, and together they co-founded the gun safety advocacy organization Giffords.
Kelly was first elected to the Senate in a 2020 special election to complete the term of the late Senator John McCain, and was re-elected to a full term in 2022. He sits on the Senate Armed Services Committee, the Senate Commerce, Science, and Transportation Committee, and the Senate Special Committee on Aging. He has been a leading Senate advocate for gun safety legislation and played a central role in negotiating the Bipartisan Safer Communities Act of 2022, the most significant federal gun legislation in nearly three decades.