A federal appeals court has upheld a 2015 state law which the Libertarian Party charges – and some Republican lawmakers admitted – was specifically designed to keep its candidates off the ballot.

Arizona’s two newest members of Congress joined more than 80 other newly elected House members for freshmen orientation November 13, as Democrats prepare to seize control of the lower chamber for the first time in eight years.

The latest batch of votes counted Monday put the U.S. Senate out of the reach of Republican Martha McSally and into the hands of an Arizona Democrat for the first time since 1994.

Arizona's knock-down, all-out Senate race is heading into overtime, as a neck-and-neck contest between two congresswomen collides with Arizona's sometimes glacial vote-counting procedures.

Ann Kirkpatrick is a resident of Tucson and entitled to run for the open congressional seat being vacated by Martha McSally, a judge ruled this afternoon.

Democrat Ann Kirkpatrick acknowledged Monday she was circulating petitions for her congressional bid last year and earlier this year which bore a Tucson address where she did not live at the time.

A new lawsuit seeks to disqualify Ann Kirkpatrick from running for Congress from Southern Arizona, charging that she improperly -- and illegally -- mislead people who signed her nominating petition.

U.S. Rep. Martha McSally, Congressional District 2, has told Republican colleagues that she will enter the race for the U.S. Senate seat being vacated by fellow Republican Jeff Flake, a move that puts a mainstream candidate who could win backing from President Donald Trump into the primary race.

Former U.S. Rep. Ann Kirkpatrick is running for Congress again, but this time from a different Arizona district.

The toughest challenger of John McCain’s 30-year U.S. Senate career didn’t turn out to be nearly as tough as Arizona Democrats had hoped, as the former Republican presidential nominee won his sixth term in office.