David Sheridan Schweikert ( SHWY-kərt; born March 3, 1962) is an American politician and businessman serving as the U.S. representative from Arizona's 1st congressional district since 2023. He previously served as the U.S. representative for Arizona's 6th congressional district from 2013 to 2023. A member of the Republican Party, he first entered Congress in 2011, representing Arizona's 5th congressional district until redistricting. His district includes most of northern Phoenix as well as Scottsdale, Paradise Valley, and Cave Creek. Schweikert served two terms in the Arizona State House of Representatives (1991–1994), chaired the state Board of Equalization (1995–2004), and was the elected Maricopa County Treasurer (2004–2007). He ran for the U.S. House of Representatives twice (losing the primary to J. D. Hayworth in 1994 and the general election to incumbent Harry Mitchell in 2008) before being elected in 2010.