TRAILING: Rick Santorum has won four states but just three delegates so far. Mitt Romney also has won four states but has 73 delegates. He is waging a strong effort to beat Mr. Santorum in Michigan. (Associated Press)
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TRAILING: Rick Santorum has won four states but just three delegates so far. Mitt Romney also has won four states but has 73 delegates. He is waging a strong effort to beat Mr. Santorum in Michigan. (Associated Press)
