"I have a lot to offer".
"I'm going to have to work hard; you don't take anything for granted".
"I think Washington needs me, the president needs me", the ex-sheriff argued.
"I'm not here to get my name in the paper", he said. He was convicted a year ago of criminal contempt for defying a court order to stop racially profiling Latinos but was pardoned by President Donald Trump, whose presidential campaign Arpaio had supported, in August before serving any jail time.
Arpaio gained national prominence, a rare feat for a local sheriff, for his aggressive immigration sweeps.
Photo Joe Arpaio put himself above the law as an Arizona sheriff and was convicted of criminal contempt.
Illegal immigrant Sam Ramos, 39, shows off his jail-issued pink underwear in the Maricopa County "Tent City Jail" on April 30, 2010 in Phoenix, Arizona. Abuses and corruption festered under Arpaio's management. "They'll have their political firing squads and bring tons of money here, because they don't want to lose", Arpaio told The Examiner, adding "I just want to do everything I can to support our president".More news: Oil dips away from 2015 highs as doubts emerge over rally
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The former sheriff is known for his fundraising talents.
Before Trump granted the pardon, the American Civil Liberties Union, which sought the court injunction against Arpaio, said it would be 'a presidential endorsement of racism'.
Arpaio enters the race with substantial baggage, from his 24 years in office and the presidential pardon. "He's talked about this so many times, and this is the furthest it's gone, but it won't last".
In a tweet declaring his candidacy, Arpaio-who was also found to have systematically failed to investigate sex crimes in Maricopa County during his tenure as sheriff-vowed to be an "unwavering" proponent of "the agenda and policies of President Donald Trump".
Arpaio is running for the seat being vacated by Sen. His decision may create an opening for Rep. Martha McSally, R-Ariz., a Republican with more moderate views on immigration who is contemplating a bid for the seat and is backed by party leaders in Washington. If elected, Arpaio would vote to confirm nominees to the federal bench, the same institution that held him in contempt.
Arpaio, who campaigned for Trump in 2016, was convicted by a judge who ruled he had willfully violated a 2011 injunction barring his officers from stopping and detaining Latino motorists exclusively on suspicion that they were in the country illegally.