Puerto Rico votes; GOP candidates battle elsewhere
SAN JUAN, Puerto Rico — Republican presidential hopefuls Mitt Romney and Rick Santorum are campaigning in next-up primary states of Illinois and Louisiana, while Puerto Ricans get their say in picking the GOP's presidential nominee.
Puerto Rico's residents cannot vote in general elections, but are set to award 20 delegates in their Sunday Republican primary.
Meanwhile, Romney was hoping to cement his lead in Illinois ahead of Tuesday's primary, with chief rival Santorum in Louisiana ahead of that state's vote on March 24.
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