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			 The billionaire businessman has rolled up a big lead in convention 
			delegates who will pick the Republican nominee, defying weeks of 
			attacks from members of the party establishment worried he will lead 
			the Republicans to defeat in the Nov. 8 presidential election. 
			 
			In Arizona, which is one of the U.S. states that borders Mexico, 
			Trump's hardline immigration message is popular and he leads in 
			polls, while in Utah Trump lags in polls behind top rival Ted Cruz, 
			a U.S. senator from Texas. 
			 
			Arizona will award its entire slate of 58 delegates to the winner of 
			Tuesday's primary. In Utah, the state's 40 delegates will be awarded 
			proportionate to the popular vote, unless a single candidate 
			captures at least 50 percent of the vote, in which case that person 
			will be awarded all the delegates. 
			
			  On Monday, Trump tried to rally worried party leaders to his 
			insurgent candidacy during a stop in Washington, D.C., where he 
			warned against efforts to deny him the nomination if he falls short 
			of securing the 1,237 delegates needed ahead of the party's July 
			convention. Trump now has 678 delegates. 
			 
			"I think it is going to be very hard for them to do," Trump said on 
			CNN of any effort to deny him the nomination if he falls short. "I 
			have millions of votes more than anybody." 
			 
			Democrats also will vote on Tuesday, in Arizona, Utah and Idaho, 
			with front-runner Hillary Clinton aiming to pile up more delegates 
			in her race against challenger Bernie Sanders. 
			 
			Sanders, a U.S. senator from Vermont, is looking for wins in many of 
			the six Democratic contests this week. Alaska, Hawaii and Washington 
			will vote on Saturday. But because Democratic delegates are awarded 
			proportionally in all states, Clinton will keep adding to her 
			delegate total even if she is not the winner in a given state. 
			 
			
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			Tuesday's Republican contests are the first since U.S. Senator Marco 
			Rubio of Florida dropped out. Ohio Governor John Kasich is still in 
			the race, splitting the anti-Trump vote with Cruz. 
			 
			"We welcome Marco's supporters with open arms," Cruz said on CNN, 
			saying a Trump candidacy in November would be "a disaster" that 
			would ensure a Clinton win. 
			 
			In Arizona, Trump has the backing of former Republican Governor Jan 
			Brewer and Maricopa County Sheriff Joe Arpaio, two of the most 
			prominent supporters of a crackdown on illegal immigrants. 
			 
			In Utah, Mitt Romney, the 2012 Republican presidential nominee, has 
			said he will vote for Cruz. 
			 
			Romney recorded phone messages on behalf of Cruz, saying, "He is the 
			only Republican candidate who can defeat Donald Trump" and that a 
			vote for Kasich was equivalent to a vote for Trump. 
			 
			(Editing by Leslie Adler) 
			
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			reserved.] 
			Copyright 2016 Reuters. All rights reserved. This material may not be published, 
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