After early ballots, Democrat Mark Kelly looks likely to flip Arizona’s second U.S. Senate seat.

John McCain knew what it meant to put the interests of constituents before the interests of party. We desperately need that kind of leader now. I remain hopeful.

If Republicans want to play dirty, then they’ll find the fight they’re looking for here. If they think the largest, most diverse, most educated generation in American history will take this lying down, they have another think coming.

I have been a registered Republican almost all my adult life who has always been comfortable engaging with people across the aisle on issues I care about deeply. I am still a Republican. But in the U.S. Senate election for Arizona, I won’t be supporting a Republican. I am supporting Democrat Mark Kelly.

If Arizona Democrat Mark Kelly wins a seat in the U.S. Senate, he could take office as early as Nov. 30, shrinking the GOP's Senate majority at a crucial moment and complicating the path to confirmation for President Donald Trump's Supreme Court nominee.

A Native American U.S. Marine immortalized for helping raise the American flag over Iwo Jima during World War II. Two Arizona senators who were Republican nominees for president. The first female justice of the U.S. Supreme Court.

U.S. Sen. Martha McSally has a commanding lead over her Republican challenger and will face Democrat Mark Kelly in the November election.

Democrat Mark Kelly says he raised nearly $12.8 million during the second quarter for his bid to unseat Arizona Republican Sen. Martha McSally. Kelly’s campaign said Tuesday he’ll report having nearly $24 million in the bank at the end of ...

The scene Sen. Victoria Steele encountered when she walked out of the Senate last week was like nothing she has seen in nearly a decade at the Capitol.  Steele, D-Tucson, knew demonstrators stood outside. She had seen some on her ...

Gov. Doug Ducey is asking a federal appeals court to overturn a ruling that could affect his ability and that of future governors to tap a special education trust account to funnel more cash into schools.