Republican Sen. John McCain framed the porousness of America's borders as both a national security concern and a human rights issue Sunday in the only scheduled general election debate in Arizona's U.S. Senate race.

Homeland Security Secretary Janet Napolitano and Arizona Republican Sen. John McCain had a terse exchange over border security in a Wednesday hearing on terrorism threats.

Democratic U.S. Senate candidate Rodney Glassman announced Aug. 30 that he had replaced his campaign manager, while another top staffer was preparing to leave the following day.

Arizona Sen. John McCain and Gov. Jan Brewer are scheduled to campaign together in a "victory tour" on Thursday and Friday.

Sen. John McCain routed conservative challenger J.D. Hayworth Aug. 24 in the Republican primary in what could be the final campaign for the former GOP presidential nominee.

It's the political establishment vs. the outsiders in Tuesday's primaries. And the establishment has the better odds.

Arizona Capitol Times Managing Editor Matt Bunk talks about Sen. John McCain's steady climb in the polls against primary contender J.D. Hayworth and how Arizona's primary election has shaped up in the final days leading up to it on NPR's Morning Edition.

The cast of "Survivor" has nothing on Sen. John McCain. Once labeled a vulnerable incumbent, the four-term Arizona Republican is the clear front-runner against challenger J.D. Hayworth after spending some $20 million and casting his GOP opponent as a late-night infomercial huckster in a series of devastating ads. The primary is Tuesday.

As John McCain and J.D. Hayworth have dominated Arizona's political headlines, four Democrats are quietly wrangling for the chance to take on the winner.

With few policy positions separating the frontrunners in Arizona’s 5th Congressional District, the candidates are relying on their qualifications, credibility and their ability to defeat incumbent Democratic Rep. Harry Mitchell in November as they seek the Republican nomination.