Mitt Romney will win the Arizona Republican primary and its 29 delegates, CNN projects based on exit polls.
All polls are now closed in Arizona and Michigan, where another GOP primary occurred today.
Romney, who is also locked in a close battle with Rick Santorum in Michigan, is 1,983 votes ahead of Santorum in that state, with 17% reporting.
Tune in to CNN TV now for live coverage of the Arizona and Michigan primaries and follow real-time results on CNNPolitics.com, on CNN's apps and on CNN's mobile website. Follow CNN Politics on Facebook and on Twitter at #cnnelections.
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