Voters Go to the Polls in GOP Primaries

In key GOP primaries, voters face a tough choice between the remaining four candidates.
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A voter casts a ballot at the Flushing Volunteer Fire Department in Flushing
 
A voter casts a ballot at the Flushing Volunteer Fire Department in Flushing, Ohio, March 6, 2012. Republicans are holding their "Super Tuesday" presidential primary in 10 states. REUTERS/Matt Sullivan (UNITED STATES - Tags: ELECTIONS POLITICS)