Seventh District Congressman Eric Burlison filed for re-election Monday, joining two others in the Republican primary.
John Casey, Republic; and Grayson Hunt, Willard, filed on the first day.
One candidate, Missi Hesketh, Forsyth, has filed on the Democratic ticket.
Fourth District incumbent Mark Alford, R-Raymore, filed today. At this point, he has no primary opponent, but five Democrats have filed.
Those filing are Jordan Herrera, Kansas City, Wayne Russell, Columbia, Hartzell Gray III, Lees Summit, G Rick, Morrisville, and Jeanette Cass, Niangua.