They took shelters from the hot sun under tents erected by security teams while volunteers filled coolers with ice and water bottles. If she's victorious, Democrats could pick up an Arizona Senate seat for the first time since Dennis DiConcini left office in 1995.
The 44-year-old says she's been following the longtime senator since she was 18 and always voted for him despite her party affiliation.
The private tribute was an emotional one.
The ceremony marked the start of five days of tributes in Phoenix and Washington for McCain, who would have turned 82 on Wednesday.
During the ceremony, Gov. Doug Ducey praised McCain for his dedication to his country. And we very much appreciate everything that Senator McCain has done for our country. The two became close during their time at the U.S. Naval Academy in the late 1950s and remained friends throughout McCain's political career, which began in 1982 when he was elected to the House of Representatives, according to The Associated Press.
"The impact that he's had on myself, Arizona, the nation", Fitzgerald said. "We can be proud he was our senator". I am so honored to have been able to call Senator McCain my friend, and am grateful to his family for allowing my family to be a part of their lives.
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With his head bowed in prayer Flake said "we are especially grateful that John made Arizona his home".
Later that day, McCain's body will depart from Arizona and be flown to Joint Base Andrews in Maryland.
He said he had not thought about a potential name change until he saw stories about the proposal Monday. "John McCain's fight for America isn't over".
"We definitely have lost a strong advocate, so we'll need someone who is going to step up to the plate", Hatch said. "Privileged to have John McCain fighting for us".
"I nearly killed him!" "We can be proud he was OUR Senator", said KyI.
"I'm happy being here for him because he was for me when I was in Desert Storm and Desert Shield".
On Thursday, a memorial service will be held at the North Phoenix Baptist Church before the senator's body is flown to Washington DC where he will lie in state on Friday at Capitol Hill.
His body will then lie in state on Friday at the USA capitol for another memorial ceremony and public viewing, to be followed on Saturday by a funeral service at the Washington National Cathedral.