John Thune

Official photo of John Thune
John Thune
R
U.S. Senator · South Dakota

John Thune is the Republican U.S. Senator from South Dakota, in office since 2005.

Current term began January 3, 2023. In the Senate since January 4, 2005.

Committee assignments

Committee work shapes much of what happens in the Senate, from hearings to shaping bills before they reach the floor.

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Term and next election

John Thune holds a Class 3 seat in the United States Senate. Senators serve six-year terms, and the two seats in each state sit in different classes, so they are not up for election in the same year. This seat is next on the ballot in 2028, when voters across South Dakota choose who fills it.

South Dakota

John Thune is one of two U.S. Senators for South Dakota, who represent the whole state rather than a single district. For the U.S. House delegation, see the South Dakota congressional districts. To find your own House representative, use the home page lookup.

Washington office: 511 Dirksen Senate Office Building Washington DC 20510

Frequently asked questions

When is John Thune next up for election?

This seat is a Class 3 Senate seat, next up for election in 2028. Every voter in South Dakota takes part in that race.

What committees does John Thune serve on?

John Thune serves on the Senate Committee on Agriculture, Nutrition, and Forestry, Senate Committee on Commerce, Science, and Transportation, Senate Committee on Finance, Senate Select Committee on Intelligence.

How do I contact John Thune?

You can reach the office of John Thune by phone at 202-224-2321 or through the official U.S. Senate website. The Washington office is at 511 Dirksen Senate Office Building Washington DC 20510.

Related on this site

Last updated July 10, 2026.

Data last checked September 26, 2026.

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