Elections WATCH LIVE: Trump Rally In Tucson, Arizona [VIDEO] (REUTERS/Carlo Allegri) Steve Guest Media Reporter March 19, 2016 10:53 AM ET Font Size: Donald Trump is holding a campaign rally in Tucson, Arizona on Saturday scheduled to begin at 3:00 PM MST (5:00 PM EST) at the Tucson Convention Center. Arizona votes in their primary this coming Tuesday.WATCH: Follow Steve on Twitter and Facebook