Hundreds of Missouri candidates have filed for Congress and the state Legislature despite uncertainty over redrawn districts.
Missouri's redistricting process has not ended.
The Supreme Court is considering lawsuits over new maps for Congress and the state House, and redrawn state Senate districts have not been finalized.
Despite that, more than 300 Republicans and Democrats filed on the first day possible for the 188 legislative races that will appear on this year's ballot.
Filing on opening day can offer several advantages.
Candidates who file on the first day draw lots to determine the order they will appear in their primary.
Candidates who wait until after opening day are listed in the order they file. In addition, filing on the first day can prevent speculation about whether a candidate will run.