Rep. Nancy Barto out-campaigned her main rival, Rep. Ray Barnes, to win the four-way Republican primary for the Senate in Legislative District 7.  Barto has cornered 46 percent out of about 18,000 votes counted so far.  Rep. Ray Barnes, who served with Barto in the Hose, received 33 percent of the votes, according to the latest tally by the Maricopa ...

A known name and a flush war chest proved to be an unbeatable combination in the Senate primary race in a West Valley District. Sen. John Nelson, a veteran politician, has captured 56 percent of the votes in Legislative District 12, according to the latest unofficial tally by the Secretary of State.

Republican activist Lori Klein holds a slight advantage over incumbent Sen. David Braswell in Legislative District 6, according to early election results.

Three current or former Arizona lawmakers, a former presidential adviser and a business executive are among the candidates in Tuesday's primary election for state treasurer.

A freshman lawmaker and a former Arizona real estate commissioner are vying for the Democratic nod to become the state's next chief elections officer and second in line to the governor.

A Democratic candidate for Arizona Corporation Commission is getting last-minute public funding, just one day ahead of Tuesday's primary election.

Arizona Capitol Times Managing Editor Matt Bunk talks about Sen. John McCain's steady climb in the polls against primary contender J.D. Hayworth and how Arizona's primary election has shaped up in the final days leading up to it on NPR's Morning Edition.

Turnout is expected to be between 20-25 percent of registered voters, the range seen in Arizona's recent primary elections.

Election officials say early primary voter ballots are slow to return in the state's metropolitan areas.

Campaigning as a write-in candidate is much like starting a marathon a couple of hours after all of the other runners — you can win, but only if you’ve got strong legs, a solid support team and a whole lot of luck.