U.S. Republican front-runner Donald Trump swept to victory in Arizona on Tuesday but rival Ted Cruz showed some fight with a win in Utah that gave hope to establishment Republicans who fear Trump would lead the party to ruin in the presidential election.<br />On the Democratic side, favorite Hillary Clinton routed challenger Bernie Sanders in Arizona to stretch her advantage in the race for her party's presidential nomination.<br />Sanders, however, won contests in Utah and Idaho to bolster his case that he still has a chance despite Clinton's big lead.
