All 90 seats in the Arizona Legislature are up for grabs this year, but only some figure in contested contests in Tuesday's primary.
The highest profile race for one of the 30 Senate seats involves former Senate President Russell Pearce's comeback attempt.
The Mesa Republican known for championing laws against illegal immigration lost a recall election last November.
He faces businessman Bob Worsley in Tuesday's primary race for the GOP's Senate nomination for District 25.
House Speaker Andy Tobin is one of three current lawmakers battling for two Republican nominations for House seats from District 1 in Yavapai County and northern Maricopa County.
Rep. Karen Fann and Sen. Lori Klein round out the GOP field in that race. Redistricting put Klein in the same district with Tobin and Fann.
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