The State Republican committee has set the dates for the caucuses that eventually will decide which Presidential candidate the Missouri delegation will back at the national convention. Most counties will hold caucuses on March 17. But Republicans in Chariton County will caucus on the 15th and those in Wayne County will meet on the 16th. St. Louis and Jackson County won’t caucus until the 24th of March. Rick Santorum won the Republican primary earlier this month with 55 percent, but that result is not binding on the caucuses.