Federal legislation to block the Tohono O’odham Nation from operating a casino on its Glendale property could cost taxpayers up to $1 billion according to a new report.

Freshman Rep. Martha McSally, R-Tucson, raised more than $643,576 in the first three months of the year and has more than $820,593 in the bank for any potential challenges, according to the latest campaign finance reports.

U.S. Sen. John McCain confirmed his long expected reelection bid, announcing that he’ll seek a sixth term.

Now that lawmakers have voted in favor of a proposal allowing the Arizona State Land Department to fund itself through the sale of state trust land, two more votes may be needed before the plan can go into effect – one from the state’s voters and one from Congress.

The United States Supreme Court set out to today determine what the Founding Fathers meant when they wrote that state legislatures shall determine the time, manner and place of federal elections.

If the U.S. Supreme Court orders the Arizona Legislature to redraw the state’s congressional map, Republican strategists expect Democratic Congresswomen Ann Kirkpatrick and Kyrsten Sinema’s congressional districts to be the first on the chopping block.

First-term Arizona Republican Martha McSally has been named to a first-rung leadership position in the U.S. House of Representatives.

More than a month after Martha McSally declared victory on election night, a judge made it official this morning and declared her the winner over U.S. Rep. Ron Barber in Arizona's 2nd Congressional District.

The results of a recount in the nation's last undecided congressional race from the midterm elections are set to be revealed Wednesday by an Arizona judge in a move that will determine the size of the GOP majority in Washington.

This week, Congress is poised to act on a broad appropriations measure to fund most federal government programs through the end of fiscal year 2015. Some Department of Homeland Security (DHS) measures, though, will only get funded to early 2015.