| State Senator | Carl Perry | REP | 01/12/2026 | District 03 | | | 2722 Railroad Cir Aberdeen SD 57401 | 300 | Carl | | Perry | | Active | Primary | 6/2/2026 12:00:00 AM | 2722 Railroad Cir | | Aberdeen | SD | 57401 | SEN | |
| State Senator | Ernie Otten | REP | 01/06/2026 | District 06 | | | 46787 273rd St Tea SD 57064 | 300 | Ernie | | Otten | | Active | Primary | 6/2/2026 12:00:00 AM | 46787 273rd St | | Tea | SD | 57064 | SEN | |
| State Senator | Sydney Davis | REP | 01/13/2026 | District 17 | | | 46838 307th St Burbank SD 57010 | 300 | Sydney | | Davis | | Active | Primary | 6/2/2026 12:00:00 AM | 46838 307th St | | Burbank | SD | 57010 | SEN | |
| State Senator | Paul Miskimins | REP | 01/13/2026 | District 20 | | | 1225 Summit Drive Mitchell SD 57301 | 300 | Paul | | Miskimins | | Active | Primary | 6/2/2026 12:00:00 AM | 1225 Summit Drive | | Mitchell | SD | 57301 | SEN | |
| State Senator | Anthony Kathol | REP | 01/13/2026 | District 27 | | | PO Box 165 Martin SD 57551 | 300 | Anthony | | Kathol | | Active | Primary | 6/2/2026 12:00:00 AM | PO Box 165 | | Martin | SD | 57551 | SEN | |
| State Senator | John Carley | REP | 01/09/2026 | District 29 | | | PO Box 17 Piedmont SD 57769 | 300 | John | | Carley | | Active | Primary | 6/2/2026 12:00:00 AM | PO Box 17 | | Piedmont | SD | 57769 | SEN | |
| State Senator | William J. Meirose | REP | 01/16/2026 | District 29 | | | 170 Old Stone Rd Sturgis SD 57785 | 300 | William | J. | Meirose | | Active | Primary | 6/2/2026 12:00:00 AM | 170 Old Stone Rd | | Sturgis | SD | 57785 | SEN | |
| State Senator | Randy Deibert | REP | 01/13/2026 | District 31 | | | 1715 Scott Ave Spearfish SD 57783 | 300 | Randy | | Deibert | | Active | Primary | 6/2/2026 12:00:00 AM | 1715 Scott Ave | | Spearfish | SD | 57783 | SEN | |
| State Senator | Helene Duhamel | REP | 01/14/2026 | District 32 | | | 1622 West Blvd Rapid City SD 57701 | 300 | Helene | | Duhamel | | Active | Primary | 6/2/2026 12:00:00 AM | 1622 West Blvd | | Rapid City | SD | 57701 | SEN | |
| State Senator | Karen M. McNeal | REP | 01/12/2026 | District 32 | | | 1201 Kulpaca Pl Rapid City SD 57701 | 300 | Karen | M. | McNeal | | Active | Primary | 6/2/2026 12:00:00 AM | 1201 Kulpaca Pl | | Rapid City | SD | 57701 | SEN | |
| State Representative | Logan Manhart | REP | 01/12/2026 | District 01 | | | 2640 130th St NW Lot 81 Aberdeen SD 57401 | 310 | Logan | | Manhart | | Active | Primary | 6/2/2026 12:00:00 AM | 2640 130th St NW Lot 81 | | Aberdeen | SD | 57401 | HOU | |
| State Representative | Adam Long | REP | 01/12/2026 | District 02 | | | 8212 E Willow Wood St Sioux Falls SD 57110 | 310 | Adam | | Long | | Active | Primary | 6/2/2026 12:00:00 AM | 8212 E Willow Wood St | | Sioux Falls | SD | 57110 | HOU | |
| State Representative | John Sjaarda | REP | 01/12/2026 | District 02 | | | 115 Lynx St Valley Springs SD 57068 | 310 | John | | Sjaarda | | Active | Primary | 6/2/2026 12:00:00 AM | 115 Lynx St | | Valley Springs | SD | 57068 | HOU | |
| State Representative | Al Novstrup | REP | 01/21/2026 | District 03 | | | 1705 Northview Ln Aberdeen SD 57401 | 310 | Al | | Novstrup | | Active | Primary | 6/2/2026 12:00:00 AM | 1705 Northview Ln | | Aberdeen | SD | 57401 | HOU | |
| State Representative | Bobbi L. Andera | REP | 01/13/2026 | District 10 | | | 207 E 23rd St Sioux Falls SD 57105 | 310 | Bobbi | L. | Andera | | Active | Primary | 6/2/2026 12:00:00 AM | 207 E 23rd St | | Sioux Falls | SD | 57105 | HOU | |
| State Representative | Kerry Loudenslager | REP | 01/09/2026 | District 12 | | | 3113 W 77th St Sioux Falls SD 57108 | 310 | Kerry | | Loudenslager | | Active | Primary | 6/2/2026 12:00:00 AM | 3113 W 77th St | | Sioux Falls | SD | 57108 | HOU | |
| State Representative | Jack R Kolbeck | REP | 01/13/2026 | District 13 | | | 1124 E Plum Creek Rd Sioux Falls SD 57105 | 310 | Jack | R | Kolbeck | | Active | Primary | 6/2/2026 12:00:00 AM | 1124 E Plum Creek Rd | | Sioux Falls | SD | 57105 | HOU | |
| State Representative | John Hughes | REP | 01/20/2026 | District 13 | | | 4405 South River Oaks Circle Sioux Falls SD 57105 | 310 | John | | Hughes | | Active | Primary | 6/2/2026 12:00:00 AM | 4405 South River Oaks Circle | | Sioux Falls | SD | 57105 | HOU | |
| State Representative | Chris Kassin | REP | 01/13/2026 | District 17 | | | 312 Joplin St Vermillion SD 57069 | 310 | Chris | | Kassin | | Active | Primary | 6/2/2026 12:00:00 AM | 312 Joplin St | | Vermillion | SD | 57069 | HOU | |
| State Representative | Jessica Bahmuller | REP | 01/14/2026 | District 19 | | | PO Box 522 Alexandria SD 57311 | 310 | Jessica | | Bahmuller | | Active | Primary | 6/2/2026 12:00:00 AM | PO Box 522 | | Alexandria | SD | 57311 | HOU | |
| State Representative | Terry Sabers | REP | 01/21/2026 | District 20 | | | 27 Arrowhead Pass Mitchell SD 57301 | 310 | Terry | | Sabers | | Active | Primary | 6/2/2026 12:00:00 AM | 27 Arrowhead Pass | | Mitchell | SD | 57301 | HOU | |
| State Representative | Terri Jorgenson | REP | 01/13/2026 | District 29 | | | PO Box 213 Piedmont SD 57769 | 310 | Terri | | Jorgenson | | Active | Primary | 6/2/2026 12:00:00 AM | PO Box 213 | | Piedmont | SD | 57769 | HOU | |
| State Representative | Mary J. Fitzgerald | REP | 01/13/2026 | District 31 | | | 11212 196th St Saint Onge SD 57779 | 310 | Mary | J. | Fitzgerald | | Active | Primary | 6/2/2026 12:00:00 AM | 11212 196th St | | Saint Onge | SD | 57779 | HOU | |
| State Representative | Steve Duffy | REP | 01/14/2026 | District 32 | | | 1622 West Blvd Rapid City SD 57701 | 310 | Steve | | Duffy | | Active | Primary | 6/2/2026 12:00:00 AM | 1622 West Blvd | | Rapid City | SD | 57701 | HOU | |
| State Representative | Dale Bartscher | REP | 01/13/2026 | District 35 | | | 3004 Copperlane Ct Rapid City SD 57703 | 310 | Dale | | Bartscher | | Active | Primary | 6/2/2026 12:00:00 AM | 3004 Copperlane Ct | | Rapid City | SD | 57703 | HOU | |
| County Auditor | Carri R. Crum | DEM | 01/09/2026 | Clay | | | 1433 E CHERRY ST VERMILLION SD 57069 | 410 | Carri | R. | Crum | | Active | Primary | 6/2/2026 12:00:00 AM | 1433 E CHERRY ST | | VERMILLION | SD | 57069 | CTY | |
| County Auditor | Brenda Hanten | REP | 01/12/2026 | Codington | | | 45921 US HWY 212 WATERTOWN SD 57201 | 410 | Brenda | | Hanten | | Active | Primary | 6/2/2026 12:00:00 AM | 45921 US HWY 212 | | WATERTOWN | SD | 57201 | CTY | |
| County Auditor | Tonya Lehman | REP | 01/15/2026 | Day | | | 820 E 3RD ST Webster SD 57274 | 410 | Tonya | | Lehman | | Active | Primary | 6/2/2026 12:00:00 AM | 820 E 3RD ST | | Webster | SD | 57274 | CTY | |
| County Auditor | Brittany Folk | REP | 01/08/2026 | Grant | | | 109 N 5th St Milbank SD 57252 | 410 | Brittany | | Folk | | Active | Primary | 6/2/2026 12:00:00 AM | 109 N 5th St | | Milbank | SD | 57252 | CTY | |
| County Auditor | Mary Blaha | IND | 01/09/2026 | Harding | | | 310 ALLISON ST BUFFALO SD 57720 | 410 | Mary | | Blaha | | Active | Primary | 6/2/2026 12:00:00 AM | 310 ALLISON ST | | BUFFALO | SD | 57720 | CTY | |
| County Auditor | Marilyn Ring | DEM | 01/20/2026 | Hyde | | | 322 COMMERCIAL AVE SE Highmore SD 57345 | 410 | Marilyn | | Ring | | Active | Primary | 6/2/2026 12:00:00 AM | 322 COMMERCIAL AVE SE | | Highmore | SD | 57345 | CTY | |
| County Auditor | Brenda McGruder | REP | 01/08/2026 | Lawrence | | | 11332 Tetro Rock Rd Lead SD 57754 | 410 | Brenda | | McGruder | | Active | Primary | 6/2/2026 12:00:00 AM | 11332 Tetro Rock Rd | | Lead | SD | 57754 | CTY | |
| County Auditor | Sheri Lund | REP | 01/13/2026 | Lincoln | | | 105 S CHERRY ST WORTHING SD 57077 | 410 | Sheri | | Lund | | Active | Primary | 6/2/2026 12:00:00 AM | 105 S CHERRY ST | | WORTHING | SD | 57077 | CTY | |
| County Auditor | Megan Biel | IND | 01/15/2026 | Marshall | | | 10089 HWY 27 BRITTON SD 57430 | 410 | Megan | | Biel | | Active | Primary | 6/2/2026 12:00:00 AM | 10089 HWY 27 | | BRITTON | SD | 57430 | CTY | |
| County Auditor | Annette Van Emmerik | REP | 01/06/2026 | McCook | | | 24998 443rd Ave Salem SD 57058-5200 | 410 | Annette | | Van Emmerik | | Active | Primary | 6/2/2026 12:00:00 AM | 24998 443rd Ave | | Salem | SD | 57058-5200 | CTY | |
| County Auditor | Tawny Heinemann | REP | 01/08/2026 | Moody | | | 606 HAWK AVE COLMAN SD 57017 | 410 | Tawny | | Heinemann | | Active | Primary | 6/2/2026 12:00:00 AM | 606 HAWK AVE | | COLMAN | SD | 57017 | CTY | |
| County Auditor | Theresa Hodges | REP | 01/13/2026 | Spink | | | 38525 174TH ST REDFIELD SD 57469 | 410 | Theresa | | Hodges | | Active | Primary | 6/2/2026 12:00:00 AM | 38525 174TH ST | | REDFIELD | SD | 57469 | CTY | |
| County Auditor | Susan B Lamb | REP | 01/06/2026 | Sully | | | 308 S 8TH ST ONIDA SD 57564 | 410 | Susan | B | Lamb | | Active | Primary | 6/2/2026 12:00:00 AM | 308 S 8TH ST | | ONIDA | SD | 57564 | CTY | |
| County Auditor | Laura Kotalik | REP | 01/15/2026 | Yankton | | | 2514 SW JIM RIVER RD Yankton SD 57078 | 410 | Laura | | Kotalik | | Active | Primary | 6/2/2026 12:00:00 AM | 2514 SW JIM RIVER RD | | Yankton | SD | 57078 | CTY | |
| Sheriff | Daniel Kaiser | REP | 01/12/2026 | Brown | | | 379501 N SHORE DR ABERDEEN SD 57401 | 430 | Daniel | | Kaiser | | Active | Primary | 6/2/2026 12:00:00 AM | 379501 N SHORE DR | | ABERDEEN | SD | 57401 | CTY | |
| Sheriff | Dave Lunzman | REP | 01/14/2026 | Brown | | | 1017 WILLOW DR ABERDEEN SD 57401 | 430 | Dave | | Lunzman | | Active | Primary | 6/2/2026 12:00:00 AM | 1017 WILLOW DR | | ABERDEEN | SD | 57401 | CTY | |
| Sheriff | Fred A Lamphere | REP | 01/14/2026 | Butte | | | 13501 WILSON CEMETERY RD NEWELL SD 57760-5763 | 430 | Fred | A | Lamphere | | Active | Primary | 6/2/2026 12:00:00 AM | 13501 WILSON CEMETERY RD | | NEWELL | SD | 57760-5763 | CTY | |
| Sheriff | Brad Howell | REP | 01/13/2026 | Codington | | | 46042 164TH ST Watertown SD 57201 | 430 | Brad | | Howell | | Active | Primary | 6/2/2026 12:00:00 AM | 46042 164TH ST | | Watertown | SD | 57201 | CTY | |
| Sheriff | Alan Dale | REP | 01/05/2026 | Corson | | | 302 1ST ST N MC LAUGHLIN SD 57642 | 430 | Alan | | Dale | | Active | Primary | 6/2/2026 12:00:00 AM | 302 1ST ST N | | MC LAUGHLIN | SD | 57642 | CTY | |
| Sheriff | Derrick L Reifenrath | REP | 01/12/2026 | Custer | | | 1203 BLUEBELL LN CUSTER SD 57730 | 430 | Derrick | L | Reifenrath | | Active | Primary | 6/2/2026 12:00:00 AM | 1203 BLUEBELL LN | | CUSTER | SD | 57730 | CTY | |
| Sheriff | Cory James Borg | REP | 01/05/2026 | Deuel | | | 912 LAC QUI PARLE ST Apt 3005 Gary SD 57237 | 430 | Cory | James | Borg | | Active | Primary | 6/2/2026 12:00:00 AM | 912 LAC QUI PARLE ST Apt 3005 | | Gary | SD | 57237 | CTY | |
| Sheriff | Jonathan J Waldner | REP | 01/08/2026 | Edmunds | | | 302 9TH ST IPSWICH SD 57451 | 430 | Jonathan | J | Waldner | | Active | Primary | 6/2/2026 12:00:00 AM | 302 9TH ST | | IPSWICH | SD | 57451 | CTY | |
| Sheriff | Lyle A Norton | REP | 01/20/2026 | Fall River | | | 2037 LINCOLN AVE HOT SPRINGS SD 57747 | 430 | Lyle | A | Norton | | Active | Primary | 6/2/2026 12:00:00 AM | 2037 LINCOLN AVE | | HOT SPRINGS | SD | 57747 | CTY | |
| Sheriff | Kurt Hall | REP | 01/15/2026 | Faulk | | | 16355 353RD AVE Faulkton SD 57438 | 430 | Kurt | | Hall | | Active | Primary | 6/2/2026 12:00:00 AM | 16355 353RD AVE | | Faulkton | SD | 57438 | CTY | |
| Sheriff | Jeremy Steffensen | REP | 01/09/2026 | Grant | | | 47646 145th St Milbank SD 57252 | 430 | Jeremy | | Steffensen | | Active | Primary | 6/2/2026 12:00:00 AM | 47646 145th St | | Milbank | SD | 57252 | CTY | |