Kyrsten Sinema has served as the senior United States Senator from Arizona since January, 2019. She previously served as a Democratic member of Congress from Arizona's 9th Congressional District, and as a Democratic member of the Arizona House of Representatives, representing the 15th District....

Kyrsten Sinema has served as the senior United States Senator from Arizona since January, 2019. She previously served as a Democratic member of Congress from Arizona's 9th Congressional District, and as a Democratic member of the Arizona House of Representatives, representing the 15th District. Born in Tucson, Arizona, Sinema moved to Phoenix in 1995. She attended Arizona State University where she earned a master’s degree in social work and then a Juris Doctor. She was a social worker in the Washington Elementary School District before becoming a criminal defense lawyer. In 2006 she chaired Arizona Together, the statewide campaign that defeated Proposition 107, which would have banned the recognition of same-sex marriage in Arizona.