Races for an open Senate seat and four intriguing House seats are on tap Tuesday when Arizona holds congressional primaries.
The election was originally planned for Aug. 6, but was moved up a week as part of a law signed earlier this year that made a series of election administration changes.
The headline race in November is for the Senate, and the primary is expected to cement the contest between Democratic Rep. Ruben Gallego and Republican Kari Lake, the 2022 gubernatorial nominee and a favorite of former President Donald Trump and his supporters.
