Sen. Roy Blunt (R) is retiring, with a field of about 20 on the primary ballot looking to succeed him. The nominee will likely be one of Attorney General Eric Schmitt, former Gov. Eric Greitens, or Rep. Vicky Hartzler (MO-04). Schmitt has moved into the lead in recent polling.
Expected to endorse Greitens, Donald Trump instead limited his election eve endorsement to 'ERIC'. That was enough for both Greitens and the frontrunner Schmitt to claim the endorsement. Perhaps Trump meant Eric McElroy, a little-known candidate also on the ballot.
There's also a large field vying for the Democratic nomination, with Trudy Busch Valentine or Lucas Kunce the likely nominee. However, the general election is likely out of reach for the party unless the controversial Greitens emerges as nominee.
These primaries will be contested using redistricted boundaries.
||Incumbent Rep. Vicky Hartzler is running for Senate. Seven are competing for the GOP nomination; the winner will be heavily favored in November.
||Same scenario as District 4. Incumbent Billy Long is also in the Senate primary, although he hasn't gotten much traction. Eight are seeking the GOP nomination.
For more detail, see this analysis from Split Ticket.
Immediately below are individual results for the two primaries discussed above. Below that are party-specific tables with results for all of the state's eight districts. Change the active district by making a selection in the drop-down menu.