Republican presidential candidate Donald TrumpDonald TrumpMcCain says he hasn't met with Trump since inauguration Mulvaney: Let states figure out 'essential health benefits' How President Trump can restore sanity to America's labor laws MORE is spending Saturday campaigning in Arizona ahead of the state's critical primary on Tuesday. 

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His first rally in Phoenix, Ariz., is scheduled to begin at 1 p.m. Eastern. 

Watch the event live in the video above.