The 2026 Missouri Senate election is to take place on Tuesday, November 3, 2026, with the primary election are to take place on Tuesday, August 4, 2026. Missouri voters selected state senators in the 17 even-numbered districts of the Senate to serve four-year terms.
The election coincides with United States national elections and Missouri state elections, including U.S. House, Auditor, and Missouri House.
Following the previous election in 2024, Republicans held a 24-to-10-seat supermajority over Democrats. The balance of power remained unchanged with Republicans keeping their supermajority of 24-to-10 over Democrats.
The 2nd district encompasses southcentral St. Charles County and includes O'Fallon, Lake St. Louis, Dardenne Prairie and Cottleville. The incumbent is Republican Nick Schroer.
The 4th district is split between southwestern St. Louis, including St. Louis Hills, North Hampton and Cheltenham, and St. Louis County, including Richmond Heights, Brentwood, Maplewood and part of Shrewsbury. The incumbent is Democrat Karla May, who is term-limited.
Endorsements
The 6th district is made up of Cole, Camden, Miller, Morgan and Moniteau counties, and includes the state capital of Jefferson City. The incumbent is Republican Mike Bernskoetter, who is term-limited.
The 8th district is composed of southeastern Jackson County, including Lee's Summit, Blue Springs and Greenwood. The incumbent is Republican Mike Cierpiot, who is term-limited.
The 10th district is made up of Lincoln, Callaway, Pike and Montgomery counties, and northwestern St. Charles county. The incumbent is Republican Travis Fitzwater, who is retiring.
The 12th district is located in northwestern Missouri and includes Nodaway, Clinton, Andrew, Livingston, Linn, Debalk, Grundy, Caldwell, Carroll, Daviess, Harrison, Chariton, Gentry, Sullivan, Atchison, Holt, Mercer and Worth counties, as well as northeastern Buchanan county. The incumbent is Republican Rusty Black.
The 14th district is based in northern St. Louis County and includes University City, Hazelwood, Ferguson and Overland. The incumbent is Democrat Brian Williams, who is term-limited.
The 16th district encompasses south-central Missouri and includes Pulaski, Phelps, Laclede, Wright, Dent and Maries counties. The incumbent is Republican Justin Brown, who is term-limited.
The 18th district is located in northeastern Missouri and includes Marion, Adair, Audrain, Randolph, Macon, Ralls, Lewis, Monroe, Clark, Shelby, Scotland, Putnam, Schuyler and Knox counties. The incumbent is Republican Cindy O'Laughlin, who is term-limited.
Endorsements
The 20th district is based in southwestern Missouri and includes Webster, Barton and Dade counties, as well as Greene county, excluding Springfield. The incumbent is Republican Curtis Trent.
The 22nd district encompasses northern Jefferson county and includes Arnold, Festus, De Soto, Pevely and Herculaneum. The incumbent is Republican Mary Elizabeth Coleman, who is retiring.
The 24th district is located in central St. Louis County and includes Kirkwood, Maryland Heights, Creve Coeur and Des Peres. The incumbent is Democrat Tracy McCreery.
The 26th district is made up of several counties west of the Greater St. Louis metropolitan area, including Franklin, Warren, Gasconade and Osage counties, as well as a small portion of western St. Louis County. The incumbent is Republican Ben Brown.
The 28th district is based in western Missouri and includes Pettis, Polk, Henry, Vernon, Benton, Dallas, Cedar, St. Clair and Hickory counties. The incumbent is Republican Sandy Crawford, who is term-limited.
The 30th district consists solely of the city of Springfield. The incumbent is Republican Lincoln Hough, who is term-limited.
The 32nd district is located in southwest Missouri and includes Jasper and Newton counties. The incumbent is Republican Jill Carter.
The 34th district consists of Platte county and western Buchanan county. The incumbent is Republican Tony Luetkemeyer, who is term-limited.