Voters will decide Tuesday whether to give the self-proclaimed toughest sheriff in America a sixth term as he faces his most serious political challenge.

ANAHEIM, Calif.— The self-proclaimed "toughest sheriff in America" has been invited to stump for a challenger's bid to be Orange County's next sheriff.

 The self-proclaimed "toughest sheriff in America" has announced plans to keep illegal immigrants separate from the rest of the inmate population at tents in Phoenix that house prisoners.

With little more than two weeks left until the primary election, Sheriff Joe Arpaio is holding a commanding lead in the latest poll over Republican challenger Dan Saban.

PHOENIX (AP) — Critics of America's self-proclaimed toughest sheriff are calling for his resignation and indictment, and for the sheriff's office to be placed into receivership.

How come Mesa Mayor Scott Smith and his staff were not aware of and allowed these illegal immigrants to be employed here in Mesa? It seems that the Tribune takes every opportunity in downing Maricopa County Sheriff Joe Arpaio for enforcing the law on illegal immigration.

PHOENIX — The federal abuse-of-power investigation into America's self-proclaimed toughest sheriff may have been closed without criminal charges but Maricopa County Sheriff Joe Arpaio's legal troubles are far from over.

The Arizona sheriff known for his hardline stance on illegal immigration has gone months without using his most controversial law enforcement tactic.

A federal appeals court on Tuesday denied an Arizona sheriff's request to reverse a lower-court decision barring his deputies from detaining people solely on the suspicion that they're illegal immigrants.

Sheriff Joe Arpaio has become an almost unstoppable force in his 20 years in office by driving home two themes: that he will unceasingly crack down on crime and, more recently, illegal immigration.

PHOENIX (AP) — Arizona Sheriff Joe Arpaio's anti-illegal immigration patrols took center stage Thursday in federal court as a group of Latinos set out to prove that his deputies racially profiled them as part of a systemic policy of discrimination.

Two top Maricopa County officials testified Wednesday before a federal grand jury that apparently is looking into whether the self-proclaimed "toughest sheriff in America" has abused his power.

Check the ThreatDown: Maricopa County sheriff Joe Arpaio, the self-proclaimed "Toughest Sheriff in America," will be a guest on Comedy Central's "The Colbert Report" Monday.

PHOENIX -- Lawyers in Arizona for the Maricopa County Sheriff's Office and attorneys from the U.S. Justice Department plan to meet for the first time Monday to try to resolve federal accusations of civil rights violations against the local law enforcement department.

A group supporting metropolitan Phoenix's sheriff demanded Wednesday that organizers of an effort to recall the lawman immediately end their campaign, and vowed to go to court to stop them.

Joe Arpaio, the self-proclaimed toughest sheriff in America, could be in for the roughest fight of his political career if a recent survey of Valley leaders is any indication.

Joe Arpaio, the self-proclaimed toughest sheriff in America, could be in for the roughest fight of his political career if a recent survey of Valley leaders is any indication.

An Arizona ethics panel on Tuesday moved to disbar Maricopa County's former top prosecutor for failed corruption investigations he and America's self-proclaimed toughest sheriff conducted targeting officials with whom they were having political and legal disputes.

Although circumstances vary, the numerous cases of injury or death involving the sheriff's office for which Maricopa County has paid more than $13.7 million in claims over the past decade have one thing in common: Sheriff Joe Arpaio accepts absolutely no responsibility.

Federal authorities said Friday that they're closing their abuse-of-power investigation into Maricopa County Sheriff Joe Arpaio in Arizona without filing charges against him.

Federal authorities sued America's self-proclaimed toughest sheriff Thursday, a rare step after months of negotiations failed to yield an agreement to settle allegations that his department racially profiled Latinos in his trademark immigration patrols.

The most popular choice for governor among Republicans is someone who isn’t running now — and may not run at all: Maricopa County Sheriff Joe Arpaio. And that could be good news for the person in second place, state Treasurer Dean Martin.