Thune, who is 63 and in his fourth Senate term, has promised to work closely with President-elect Donald Trump despite differences between the two over the years.

Attention is already turning to 2026, when South Dakota will elect a new governor as well as hold races for U.S. Senate.

President-elect Donald Trump is expected to select South Dakota Gov. Kristi Noem to fill the role of Homeland Security secretary, according to reports on Tuesday.

Trump, in a statement, cited Noem’s strong background in securing the border for the appointment as the Republican looks to crack down on illegal immigration.

Noem, 52, a Trump loyalist who has offered firm backing for the GOP leader's promise to carry out mass deportations, will preside over multiple agencies.

President-elect Donald Trump picked South Dakota Gov. Kristi Noem to head the Department of Homeland Security, as he zeroes in on border security.

Voters in South Dakota have rejected a proposal to add protections for abortion rights to the state constitution, preserving a near-total ban there

Voters in South Dakota and North Dakota have rejected a ballot measure meant to legalize recreational marijuana.

Another ballot measure could give grocery shoppers relief by removing the state sales tax on food. South Dakota lowered its general sales tax last year from 4.5 percent to 4.2 percent, and the new initiative would eliminate taxes on most food items, excluding alcohol and prepared meals.

Sen. John Thune has won an internal election among Republican senators to become the chamber’s next majority leader

South Dakota Gov. Kristi Noem has been nominated to lead the Department of Homeland Security in the new Trump administration.

South Dakota Republican Gov. Kristi Noem is President-elect Donald Trump’s choice to run the federal Department of Homeland Security, according to CNN.