The battleground for the Republican presidential nomination heads to the deep South for Tuesday's primaries in Alabama and Mississippi after hardline conservative Rick Santorum won Saturday's Kansas caucus.
Republican presidential candidate Rick Santorum and his wife, Karen, greet supporters during a rally in Springfield, Missouri. Santorum won 51 percent of the vote in Kansas, compared with 21 percent for Mitt Romney
Frontrunner Mitt Romney has consolidated his position with a string of Super Tuesday victories but faces a tough test in the South, and Santorum's solid win in Kansas kept the Christian conservative's hopes alive.
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