While Democratic U.S. Rep. Ann Kirkpatrick and her opponent, Republican Paul Gosar, have brought in nearly the same amount of money over the past three months, Kirkpatrick has reached into her much deeper coffers, outspending Gosar nearly 4-to-1 in the same period.

U.S. Rep. Harry Mitchell posted his biggest fundraising quarter since his first run for Congress, but Republican challenger David Schweikert narrowly topped his cash haul as the two moved into the final stretch of one of the state’s most hotly contested races.

Democratic U.S. Rep. Gabrielle Giffords has raised nearly three times more money, has spent more than twice as much money and has continued to gather contributions at a faster pace than her Republican challenger.

Republican Ben Quayle dwarfed his Democratic opponent in fundraising during the latest reporting period, but Jon Hulburd is nearly even with him in cash on hand.

Arizona campaign finance regulators don't think Gov. Jan Brewer and Republican organizations violated any state laws or rules through fundraising and other activities involving the Republican Governors Association.

Attorneys for the Arizona Democratic Party filed a complaint alleging that the state GOP, the Republican Governors Association and Gov. Jan Brewer's campaign violated a host of campaign finance laws.

A well-known tax watchdog group says a new campaign urging voters to oppose all 10 ballot measures this November is misleading because it is being run by a left-leaning organization masquerading as an anti-tax group.

Many Republicans in highly competitive Senate races are facing a financial disadvantage going into the general election.

Tom Horne and Felecia Rotellini were feeling the financial pinch after their hard-fought primary wins in the attorney general’s race.

Without a primary to drain his campaign cash, Democratic treasurer nominee Andrei Cherny has a massive war chest as he prepares to launch a spate of television ads in time for early voting.