PHOENIX -- Republican voters in Arizona's 6th Congressional District are choosing between two sitting congressmen who have been engaged in a heated primary battle.
Ben Quayle and David Schweikert have been battling for weeks as each seeks a second term. The two were elected to adjacent districts in 2010, but redistricting made Quayle's more competitive and he decided to run in the nearby 6th District.
Each has been the target of heavy negative advertising on television in recent weeks.
The winner of Tuesday's primary will be highly favored to win the seat in November because the district is heavily Republican.
Democrats Matt Jette and John Williamson are running in their party's primary.
The district includes Scottsdale, Paradise Valley and parts of Phoenix.
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