TOPEKA, Kan. (AP) — Officials say that six Republican presidential candidates have filed to participate in the Kansas Republican Party's caucus in March, while three Democratic candidates have informally pledged to participate in the state's caucus. The Topeka Capital-Journal reports that Ohio Governor John Kasich was the first Republican to file to participate in the March 5 caucus. He is joined by U.S. Senator Ted Cruz of Texas, surgeon Ben Carson, former Florida Governor Jeb Bush, businessman Donald Trump and U.S. Senator Marco Rubio of Florida. Officials expect more to join the caucus before the January 20 deadline. Kerry Gooch, the state Democratic Party's executive director, says he expects former Secretary of State Hillary Clinton, U.S. Senator Bernie Sanders of Vermont and former Maryland Governor Martin O'Malley to stay in the race through the state Democratic caucus. The deadline to be included is January 4.