Arizona is too close to call for either Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE or Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE, according to a new poll.

Clinton leads Trump, 35.1 to 33.5 percent, in the Arizona Republic/Morrison/Cronkite News survey out Wednesday.

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The new results leave the pair within the sampling’s 3.3-point margin of error as they fight for support in the Grand Canyon State.

Libertarian presidential nominee Gary Johnson Gary Earl JohnsonWhat the numbers say about Trump's chances at reelection Presidential race tightens in Minnesota as Trump plows resources into state The Hill's Campaign Report: Biden condemns violence, blames Trump for fomenting it l Bitter Mass. primaries reach the end l Super PAC spending set to explode MORE ranks third, with 6.9 percent, followed by Green Party nominee Jill Stein’s 1.5 percent. Another 22.9 percent remain undecided.

“I think that’s the big finding: There’s still the 20 percent out there who haven’t made up their minds,” Eric Hedberg, director of research for the Morrison Institute for Public Policy, said Wednesday.

The survey of 704 likely voters in Arizona was conducted via telephone interviews from Aug. 17 to 31. It is the first major independent statewide political poll in the traditionally red state of the 2016 race.

Former President Bill Clinton William (Bill) Jefferson ClintonGOP brushes back charges of hypocrisy in Supreme Court fight Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE, Hillary Clinton’s husband, is the last Democrat to carry the state, winning in 1996. Before him, former President Harry Truman took it in 1948.

Recent polls show a tightening national race between Trump, the GOP’s presidential nominee, and Hillary Clinton, however.

Clinton, the Democratic nominee, leads Trump by about 3 points nationwide, according to the latest RealClearPolitics average of polls.