Candidates for Congress and state offices will line up at the secretary of state's office in the state capital this week to file for the 2014 election.
Filing opens on Tuesday and runs until March 25. Candidates showing up on Tuesday will participate in a random drawing to determine whose name shows up first on the August primary ballot.
All 163 state House seats are up for re-election, as well as 17 Senate seats. The Republicans currently hold 108 seats in the House and have 24 of the Senate's 34 spots.
The state auditor's race is the only statewide contest on the ballot. Republican Auditor Tom Schweich (shwyk) is seeking re-election and has no announced Democratic opposition.
All eight of Missouri's U.S. House members also face re-election.