Call
the Map
2026 midtermsResults

2026 results · South Dakota · South Dakota at-large District

Marty Jackley, the Republican, holds South Dakota's at-large House seat for the Republicans

Donald Trump carried the district by 29.1 points in 2024; this year's count is a 1.1-point move toward the Democrats.

South Dakota at-large District: votes counted for each candidate
CandidateVotesShareShare of the vote
Marty JackleyRepublican195,58864.0%
Nicole "Nikki" GronliDemocrat109,99736.0%

Called by Call the Map, Nov 4, 8:24 AM EST · 87% counted.

About 87% of the expected vote counted305,585 votesCount last changed Nov 7, 5:11 PM ESTSource: South Dakota Secretary of State

The map

Loading the map.

About the seat

South Dakota's at-large House seat takes in all or part of 66 counties. The Republicans held it before this election. Its voters went R+29.1 for president in 2024. Its move from that vote, 1.1 points toward the Democrats, ranks 1 of 1 among the state's districts, counting from the largest move toward the Democrats.

2024 president
R+29.1
2024 House race, same lines
R+44.1
Move from 2024, rank in state
1 of 1
  1. Minnehaha County22%
  2. Pennington County13%
  3. Lincoln County9%
  4. Brown County4%
  5. Brookings County4%
  6. Lawrence County4%
  7. Meade County3%
  8. Codington County3%
  9. 58 more39%

Shares are of the votes counted this year. The 2024 House figure is the same district, on the same lines.

What the count shows

Added together, the 66 counties compared moved 1.1 points toward the Democrats from the 2024 presidential vote.

The counties compared cast 71% as many votes as in 2024, from 80% in Grant County to 57% in Hanson County.

Hughes County moved most: R+30.1 for president in 2024, R+37.1 this year

The 10 counties with the largest moves from the 2024 presidential vote, among those with 2,000 or more votes for president in 2024 and a quarter of that counted, and at least half a percent of the state's 2024 vote. Each line runs from the 2024 margin to this year’s.

CountyR+70EvenD+70Move
Hughes County6,447 votes7.0 pts → R
Union County5,805 votes5.8 pts → D
Spink County2,246 votes5.8 pts → R
Lake County4,410 votes5.5 pts → R
Beadle County4,817 votes5.2 pts → R
Minnehaha County67,033 votes5.0 pts → D
Marshall County1,656 votes4.5 pts → R
Kingsbury County2,054 votes4.4 pts → R
Tripp County1,926 votes4.4 pts → R
Clay County4,066 votes3.8 pts → D

2024 president 2026

Minnehaha County added 6,772 net votes for Gronli against the 2024 margin, 17% of the district's change

Across the 66 counties compared, the margin moved by 39,631 votes toward Gronli: this year’s lead in votes against the 2024 presidential lead in votes, county by county. The figure counts voters who changed sides and differences in who turned out alike; the count cannot tell them apart.

  1. Minnehaha County+6,772 Gronli
  2. Pennington County+5,813 Gronli
  3. Lincoln County+3,484 Gronli
  4. Meade County+2,445 Gronli
  5. Codington County+1,605 Gronli
  6. Union County+1,603 Gronli
  7. Lawrence County+1,584 Gronli
  8. Brown County+1,066 Gronli

U.S. HouseBefore the election R 1–0, now R 1–0

  1. R+28.0Jackley

won leads, still counting changed party. Margins are the leader’s share minus the runner-up’s, in points.

Every count on this page is the official count published by the South Dakota Secretary of State. Counts are unofficial until the state certifies them. The 2024 comparison is the presidential vote, Kamala Harris against Donald Trump, on the same ground. Margins are the Democrat minus the Republican, in points of all votes.