Kyrsten Lea Sinema is an American politician serving as the senior United States Senator from Arizona since 2019. A member of the Democratic Party, she served as the U.S. Representative from Arizona’s 9th congressional district from 2013 to 2019. She previously served in both chambers of the Arizona State Legislature, having been elected to the Arizona House of Representatives in 2004 and the Arizona Senate in 2010.
Sinema began her political career as an activist for the Green Party before joining the Arizona Democratic Party in 2004. In the 2012 elections, she was elected to the U.S. House of Representatives, becoming the first openly bisexual member of Congress in the history of the United States.