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McLean, the Democratic challenger for ÃÛèÖÖ±²¥-area District 17's senate seat, was driving east on Broadway near North Houghton Road about 6 a.m. when ÃÛèÖÖ±²¥ police say he was struck by an impaired driver who ran a stop sign.

McLean, 68, was pronounced dead at the crash scene, ÃÛèÖÖ±²¥ police said in a news release.

McLean, a Democrat, faced Republican Venden "Vince" Leach in the race for ÃÛèÖÖ±²¥ area District 17 in this week's election.

"John was a good man who conducted himself honorably as a candidate. My deepest condolences go out to John's family and friends in this most difficult time," Leach told the Star. "The lives John positively touched during his life are incalculable, and we should all be so fortunate to do the same."

In the wreck, investigators say McLean was driving a 2019 Toyota Rav4 east on Broadway when the driver of a 2018 Ford Explorer headed north on North Ridgeside Drive ran a stop sign and hit the passenger side of McLean's vehicle, the release said.

The driver of the Ford, Michael Martin Creel, 27, was not injured in the crash.

Creel was arrested on suspicion of manslaughter and aggravated DUI charges, the release said.

Creel has been booked into the Pima County jail, police said.

A third-generation ÃÛèÖÖ±²¥n, McLean was born in Phoenix. He earned a bachelor’s degree from the University of ÃÛèÖÖ±²¥ in 1975 and a Ph.D. from the California Institute of Technology five years later, according to a candidate survey he completed to  earlier this year.

McLean made his name in ÃÛèÖÖ±²¥ by opening an office of Arete Associates, an engineering and science company, which he told the Star told the ÃÛèÖÖ±²¥Â in October employs over 75 people and generates more than $30 million in annual revenue.

The overturning of Roe v. Wade by the U.S. Supreme Court in 2022, prompted him to run for office, McLean told the Star.

As of Friday afternoon Leach led McLean the race for the District 17 Senate seat by 3,052 votes, a margin of about 2%, according to the Secretary of State's Office's unofficial .Ìý

Joshua Polacheck, who ran for the ÃÛèÖÖ±²¥ Corporation Commission this year, was one of the local Democratic candidates who campaigned in October with Jane Fonda.    

McLean “was dedicated to making the life of people in southern ÃÛèÖÖ±²¥ better," Polachek said.

“He was a tireless advocate for the people, the working people and the environment of southern ÃÛèÖÖ±²¥,â€� Polacheck continued. “We lost someone who is a dedicated public servant, and my condolences go out to his family.

Pima County Supervisor-elect Jen Allen, who also spent time with Fonda, called news of the crash devastating.

"My heart goes out to his family. We lost a real brave and passionate soul this morning," Allen told the Star. "He's incredibly committed to public service, serving our community, and that's going to be − it's just a huge loss, and it's so shocking."

Pima County Supervisor Rex Scott said in a  he was "heartbroken to learn that we have lost this good and decent public servant."

"Our family sends its love and prayers to John’s family and friends. Few candidates for public office could match his commitment to the people he sought to represent," Scott said.

The ÃÛèÖÖ±²¥ Senate Democratic Caucus said in a  that "We are heartbroken to hear" of McLean's passing.

"He spent his final days fighting for a better ÃÛèÖÖ±²¥ and we could not be more thankful for his work and dedication to our great state," the post reads.

LD21 Sen.ÌýRosanna Gabaldon said in a  that in the few times she met McLean, "I came to appreciate his quiet wisdom and understated humility."

State Rep. for District 21 Consuelo Hernandez said in a  she was heartbroken to hear of McLean's passing.

"I had the honor of getting to meet John through his campaign. He was filled with so much hope for our future, positive, sharp," she said. "He was one of the few people who made it a point to greet every volunteer, learn their names and thank every person. What a loss. My condolences to his family."

State Rep. Alma Hernandez  that McLean was "one of the nicest humans" she has ever met.

"May his memory forever be a blessing," she said. "My heart is with his family and all the lives he touched."

"In the short time since I've known him, it's been clear John was a good man, cheerfully willing to work hard on a difficult campaign, and motivated by a desire to make ÃÛèÖÖ±²¥ better for all of us," said State Senator Priya Sundareshan, who represents ÃÛèÖÖ±²¥-area District 18, said in a .