Republican Matt Salmon is returning to Congress after defeating Democrat Spencer Morgan in a district covering much of the East Valley.
Cronkite News bases its projection on unofficial returns showing Salmon leading by a wide margin.
A former state senator, Salmon represented an East Valley district in the U.S. House from 1995-2001 before honoring a promise to serve just four terms.
Salmon narrowly lost to Democrat Janet Napolitano in the 2002 Arizona governor’s race.
This year, he defeated former Kirk Adams, former speaker of the Arizona State House of Representatives, in the GOP primary for the redrawn district.
Morgan, a 26-year-old Gilbert Democrat, has never held an elected office.
District 5 includes parts of Chandler, Gilbert, Mesa and Scottsdale.