Polls opened at 6 a.m. Tuesday morning, and will remain open until 7 p.m. for voters to cast a ballot in several races. 

Arizona residents will vote in a primary election this week, and a few high-profile seats are on the line.

The Arizona Supreme Court has ruled an initiative that would create a so-called “top two” primary will appear on the November ballot, overturning a lower court decision. 

A Maricopa County Superior Court judge says a proposed initiative to change Arizona’s primary election system is unconstitutional and will not be on November’s ballot.

Jeff Flake’s campaign for Senate got a major boost today-- both of Arizona’s sitting Senators gave him their endorsement. 

Governor Jan Brewer says she won’t take any further steps to have legislators consider election-law changes. 

Many Republicans voting in today’s presidential preference election are turning in their mail-in ballots at the polls or casting provisional ballots. From Phoenix, KJZZ’s Paul Atkinso

For the Arizona Presidential Primaries average citizens are being encouraged to participate in Project White House 2012. The Tucson Weekly is holding a series of challenges, and will even endorse the participant who gains the most public support. Candidate Gary Swing explains why he's decided to run in the presidential primary this year.

Arizona Republicans voting in next month’s presidential primary will likely find some unfamiliar names on the ballot--and one major candidate left off. Former ambassador and Utah Governor Jon Huntsman wasn’t eligible.