Rick Santorum easily won the Republican presidential caucuses in Kansas on Saturday, but front-runner Mitt Romney was victorious in the Wyoming county caucuses and other balloting that extended his GOP delegate lead.

Mr. Santorum campaigned in Kansas on Wednesday and Friday, telling voters that his values and vision were a good match for this deep-red GOP stronghold. The former Pennsylvania senator already has notched wins in nearby Oklahoma, Colorado, Missouri and Iowa.

Mr. Santorum’s rivals for the GOP nomination largely bypassed campaigning in Kansas.