Rick Santorum won the Kansas caucuses in a rout on Saturday and Republican presidential front-runner Mitt Romney showed strength in Wyoming, a weekend prelude to suddenly pivotal Southern showdowns in the week ahead.

Returns from 73 percent of the Kansas precincts showed Santorum with 53 percent support, far outpacing Romney, who had 17 percent. Newt Gingrich had 16 percent and Ron Paul trailed with 13 percent.

Santorum picked up at least 32 of the state’s 40 delegates at stake, cutting slightly into Romney’s overwhelming’s advantage.

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