More than for her shock of purple hair or unpredictable votes, Democratic Sen. Kyrsten Sinema is perhaps best known for doing the unthinkable in Washington: She spends time on the Republican side of the aisle.

Arizona Attorney General Mark Brnovich announced Thursday he's running for U.S. Senate, becoming the third major candidate seeking the Republican nomination to take on Democrat Mark Kelly.

Retired Maj. Gen. Michael "Mick" McGuire, who led the Arizona National Guard through the state's response to the COVID-19 pandemic, formally began his campaign for U.S. Senate on Tuesday, becoming the second major Republican looking to unseat Democrat Mark Kelly.

During his tenure as Arizona secretary of state, Bennett made it through relatively unscathed and without scandals or controversies – save for one that drew national attention.

Former Nogales Mayor Marco Lopez launched his bid for governor with a request to "join us'' -- and a highly partisan jab at Republicans.

In a state that has turned from red to purple, Arizona’s Republican and Democratic parties continue to push away from the center – one opens the door for more voices to be heard and the other shuts out those who disagree.

Arizona Republicans voted Saturday to censure Cindy McCain and two prominent GOP members who have found themselves crosswise with former President Donald Trump.

All those folks fleeing elsewhere puts Arizona on track for picking up a 10th seat in the U.S. House of Representatives beginning in 2022.

Gov. Doug Ducey said Wednesday he has seen no evidence of "widespread fraud or irregularity'' in the conduct of the Arizona election.

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