A total of 52 delegates to the Republican National Convention was at stake, 40 in Kansas and a dozen in Wyoming.

Returns from 20 percent of Kansas' precincts showed Santorum with 51 percent support, Romney with 19 percent, Newt Gingrich with 18 percent and Ron Paul with 10 percent.

In Wyoming, where some counties caucused earlier in the week, Romney had five of the 12 delegates at stake, Santorum had two, Paul had one, and one was uncommitted. Three more remained to be determined in party meetings on the day's calendar.