Romney picked up 29 delegates in Ariaona victory.
Read more...Romney sweeps Arizona, but can he come out on top in his home state of Michigan?
Read more...Santorum's campaign encouraged Democrats to vote against Romney.
Read more...Current polls show a very tight race in Michigan and Mitt Romney leading in Arizona.
Read more...Arizona Governor Jan Brewer officially endorsed Mitt Romney on “Meet the Press” Sunday.
Read more...A Michigan victory could pose a real threat to Romney heading into Super Tuesday.
Read more...LIVE: Will the culture war take center stage at the latest Republican debate?
Read more...10 questions we want answered in the Arizona debate.
Read more...A look at the day's political happenings.
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