South Dakota At-Large District

Not ranked (at-large)

South Dakota has one district covering the whole state, so there are no lines to compare. Its shape is the state's shape.

A score describes shape, not intent. Coastlines, rivers and the Voting Rights Act can all make a district irregular. How scores work

The three measures

Polsby-Popper: 0.58
Area compared with perimeter. Low for jagged or snaking edges.
Reock: 1.00
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
Convex hull: 1.00
Area compared with a rubber band stretched around the district, counting only land. Low for bites and tentacles.

Each measure runs from 0 to 1, where 1 is a perfect circle or a shape with no dents.

Cities and towns

The largest places with people in this district, from the 2020 Census. A place split between districts shows how many of its residents live in this one.

Sioux Falls cityall 192,517 residents
Rapid City cityall 74,703 residents
Aberdeen cityall 28,495 residents
Brookings cityall 23,377 residents
Watertown cityall 22,655 residents
Mitchell cityall 15,660 residents
Yankton cityall 15,411 residents
Huron cityall 14,263 residents
Pierre cityall 14,091 residents
Spearfish cityall 12,193 residents

And 468 smaller places. 22% of this district's people live outside any city, town or named community. How places are counted

2024 presidential vote

Kamala Harris 35.1%, Donald Trump 64.9%

Shares of the votes for the two of them; other candidates are left out. One district covers the state, so this is the whole state's vote. Where the votes come from

U.S. House

Marty Jackley, Republican

Elected November 3, 2026, takes office January 3, 2027.

Unofficial results from the South Dakota Secretary of State, checked November 6, 2026. A race shows a winner once news decision desks have called it. Results become official when the state certifies them. Where this comes from

South Dakota's senators

Mike Rounds, RepublicanRe-elected November 3, 2026.
John Thune, Republican

Senators are elected by the whole state, so district lines don't change who they are. Senators serving as of November 6, 2026. Senators elected in November 2026 take office January 3, 2027. Where this comes from