
U.S. Senator for South Dakota
Republican
Senate term end not loaded yet
Missed 0.1% of roll calls. Chamber median 2.1%.
The full voting recordCounts roll calls where most Democrats and most Republicans voted differently, leaving out procedural votes.
How we countFrom FEC filings, Voteview roll calls and Congress.gov.
Republican. In Congress since 1997, 7 terms in total.
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Bills and resolutions Thune signed on to as a cosponsor. An original cosponsor signed on the day the bill was introduced. Source: govinfo bill status files, last updated Nov 6, 2026.
A resolution relating to the death of the Honorable Nancy Kassebaum, former United States Senator for the State of Kansas.
Sponsor Jerry Moran (R). Original cosponsor. 99 cosponsors. S.Res. 913 on Congress.gov
Passed the Senate
Right to Worship Act
Sponsor Ted Cruz (R). Joined Sep 28, 2026. 3 cosponsors. S. 5289 on Congress.gov(opens in a new tab)
Introduced
A resolution honoring the life, service, and legacy of the Honorable Jon Llewellyn Kyl, former Senator for the State of Arizona.
Sponsor Mark Kelly (D). Original cosponsor. 99 cosponsors. S.Res. 897 on Congress.gov(opens in a new tab)
Passed the Senate
Lindsey O. Graham Sanctioning Russia Act of 2026
Sponsor Darline Graham (R). Original cosponsor. 63 cosponsors. S. 5025 on Congress.gov(opens in a new tab)
Introduced
Lindsey O. Graham Sanctioning Russia Act of 2026
This bill imposes a variety of sanctions, tariffs, and prohibitions related to Russia.
For example, under the bill, the President must
• impose visa- and property-blocking sanctions on specified persons (individuals and entities) such as the Russian president, certain Russian military commanders, and any foreign person that knowingly provides goods or services relating to Russia's defense industrial base;
• increase the rate of duty on all goods imported into the United States from Russia to a rate of up to 500% ad valorem (i.e., relative to the value);
• increase the rate of duty up to 100% ad valorem on all goods imported into the United States from a country that was among the five largest importers of Russian-origin crude oil or natural gas if such country knowingly makes new purchases of such products after enactment of the bill;
• impose property-blocking sanctions on financial institutions organized under Russian law and owned wholly or partly by Russia; and
• impose property-blocking sanctions on foreign vessels that knowingly transport certain products of Russian origin, including crude oil, uranium, and coal.
The bill prohibits (1) the export, reexport, or in-country transfer to or in Russia of U.S.-produced energy or energy product; (2) U.S. persons from making new investments in Russia or purchasing Russian sovereign debt; and (3) trading the securities of Russian government-owned, -controlled, or -affiliated entities on U.S. national securities exchanges.
The President may waive requirements of the bill by certifying it is in the national interest.
A resolution honoring the life and legacy of the Honorable Lindsey Olin Graham, a Senator from the State of South Carolina.
Sponsor Tim Scott (R). Original cosponsor. 98 cosponsors. S.Res. 801 on Congress.gov(opens in a new tab)
Introduced
A resolution honoring the life of the Honorable Donald W. Riegle, Jr., former Senator for the State of Michigan.
Sponsor Gary Peters (D). Original cosponsor. 99 cosponsors. S.Res. 755 on Congress.gov(opens in a new tab)
Passed the Senate
This resolution honors the life of Donald W. Riegle, Jr., former Senator for the state of Michigan, and expresses condolences to his family and loved ones.
A resolution honoring the life and legacy of John Seymour, the late Senator for the State of California.
Sponsor Alex Padilla (D). Original cosponsor. 99 cosponsors. S.Res. 739 on Congress.gov(opens in a new tab)
Passed the Senate
A resolution designating the week of May 10 through May 16, 2026, as "National Police Week".
Sponsor Chuck Grassley (R). Original cosponsor. 69 cosponsors. S.Res. 735 on Congress.gov(opens in a new tab)
Passed the Senate
SAVE Moms and Babies Act of 2026
Sponsor Cindy Hyde-Smith (R). Joined May 13, 2026. 37 cosponsors. S. 3697 on Congress.gov(opens in a new tab)
Introduced
A resolution honoring the life of Dirk Arthur Kempthorne, former United States Senator for the State of Idaho.
Sponsor Mike Crapo (R). Original cosponsor. 99 cosponsors. S.Res. 723 on Congress.gov(opens in a new tab)
Passed the Senate
This resolution honors the life of Dirk Kempthorne, former Senator for the state of Idaho, and offers condolences to his family and loved ones.
Forced Abortion Prevention and Accountability Act
Sponsor Jim Banks (R). Joined May 11, 2026. 24 cosponsors. S. 2955 on Congress.gov(opens in a new tab)
Introduced
A resolution welcoming Their Majesties King Charles III and Queen Camilla of the United Kingdom to the United States on the occasion of His Majesty's address to a joint meeting of Congress, and recognizing the historic global significance of the United States-United Kingdom relationship.
Sponsor James Risch (R). Original cosponsor. 32 cosponsors. S.Res. 697 on Congress.gov(opens in a new tab)
Passed the Senate
North Platte Canteen Congressional Gold Medal Act
Sponsor Deb Fischer (R). Joined Apr 27, 2026. 76 cosponsors. S. 645 on Congress.gov(opens in a new tab)
Passed the Senate
North Platte Canteen Congressional Gold Medal Act
This bill provides for the award of a Congressional Gold Medal to recognize the individuals and communities that provided financial and other support for the North Platte Canteen in North Platte, Nebraska, during World War II.
SAVE America Act
Sponsor Mike Lee (R). Joined Feb 12, 2026. 49 cosponsors. S. 3752 on Congress.gov(opens in a new tab)
Introduced
Safeguard American Voter Eligibility Act or the SAVE America Act
This bill requires individuals to provide documentary proof of U.S. citizenship when registering to vote, and requires photo identification to vote, in federal elections.
Specifically, the bill prohibits states from accepting and processing an application to register to vote in a federal election unless the applicant presents documentary proof of U.S. citizenship. The bill specifies what documents are considered acceptable proof of U.S. citizenship, such as identification that complies with the REAL ID Act of 2005 that indicates U.S. citizenship.
Further, the bill (1) prohibits states from registering an individual to vote in a federal election unless, at the time the individual applies to register to vote, the individual provides documentary proof of U.S. citizenship; and (2) requires states to establish an alternative process to demonstrate U.S. citizenship.
Each state must take affirmative steps on an ongoing basis to ensure that only U.S. citizens are registered to vote, which shall include establishing a program to identify individuals who are not U.S. citizens using information supplied by certain sources.
Additionally, states must remove noncitizens from their official lists of eligible voters.
The bill (1) provides for a private right of action for certain violations, and (2) establishes criminal penalties for certain offenses.
Individuals voting in federal elections must present an eligible photo identification document. An individual who votes by absentee ballot must submit a copy of their identification document with both the request for, and the submission of, the absentee ballot.
SAVE Act
Sponsor Mike Lee (R). Joined Feb 12, 2026. 49 cosponsors. S. 128 on Congress.gov(opens in a new tab)
Introduced
Safeguard American Voter Eligibility Act or the SAVE Act
This bill requires individuals to provide documentary proof of U.S. citizenship when registering to vote in federal elections.
Specifically, the bill prohibits states from accepting and processing an application to register to vote in a federal election unless the applicant presents documentary proof of U.S. citizenship. The bill specifies what documents are considered acceptable proof of U.S. citizenship, such as identification that complies with the REAL ID Act of 2005 that indicates U.S. citizenship.
Further, the bill (1) prohibits states from registering an individual to vote in a federal election unless, at the time the individual applies to register to vote, the individual provides documentary proof of U.S. citizenship; and (2) requires states to establish an alternative process under which an applicant may submit other evidence to demonstrate U.S. citizenship.
Each state must take affirmative steps on an ongoing basis to ensure that only U.S. citizens are registered to vote, which shall include establishing a program to identify individuals who are not U.S. citizens using information supplied by certain sources.
Additionally, states must remove noncitizens from their official lists of eligible voters.
The bill allows for a private right of action against an election official who registers an applicant to vote in a federal election who fails to present documentary proof of U.S. citizenship.
The bill establishes criminal penalties for certain offenses, including registering an applicant to vote in a federal election who fails to present documentary proof of U.S. citizenship.
Dakota Mainstem Water Supply Project Feasibility Study Act
Sponsor Mike Rounds (R). Original cosponsor. 1 cosponsor. S. 3736 on Congress.gov(opens in a new tab)
Passed committee
A resolution honoring the life, achievements, and legacy of Ben Nighthorse Campbell.
Sponsor Michael Bennet (D). Original cosponsor. 99 cosponsors. S.Res. 585 on Congress.gov(opens in a new tab)
Passed the Senate
Pregnant Students’ Rights Act
Sponsor Ashley Moody (R). Joined Jan 14, 2026. 24 cosponsors. S. 3627 on Congress.gov(opens in a new tab)
Introduced
Pregnant Students' Rights Act
This bill requires each institution of higher education (IHE) that participates in federal student aid programs to provide certain information to prospective and enrolled students on the rights and resources for pregnant students to carry a baby to term or students who may become pregnant while enrolled at the IHE to carry a baby to term.
In particular, this required information must include
• a list of community and on-campus resources that exist to help a pregnant student in carrying the baby to term and caring for the baby after birth,
• information about the accommodations available to help a pregnant student carry the baby to term and parent the baby after birth, and
• information on how to file a discrimination complaint related to the student's determination to carry a baby to term.
PBM Price Transparency and Accountability Act
Sponsor Mike Crapo (R). Original cosponsor. 27 cosponsors. S. 3345 on Congress.gov(opens in a new tab)
Introduced
Kamisha's Law
Sponsor Mike Rounds (R). Joined Nov 19, 2025. 2 cosponsors. S. 2624 on Congress.gov(opens in a new tab)
Introduced
A resolution designating November 1, 2025, as "National Bison Day".
Sponsor John Hoeven (R). Original cosponsor. 25 cosponsors. S.Res. 475 on Congress.gov(opens in a new tab)
Passed the Senate
This resolution designates November 1, 2025, as National Bison Day.
A resolution condemning Russian incursions into NATO territory and reaffirming Article 5 of the North Atlantic Treaty.
Sponsor Richard Durbin (D). Original cosponsor. 16 cosponsors. S.Res. 442 on Congress.gov(opens in a new tab)
Introduced
A resolution condemning the brutal Hamas-led terrorist attack on the State of Israel on October 7, 2023, and supporting an outcome that ensures the forever survival of Israel, the complete denial of Hamas's ability to reconstitute in the region, and the release of all the remaining hostages from the Gaza Strip, including two United States citizens.
Sponsor Joni Ernst (R). Original cosponsor. 52 cosponsors. S.Res. 438 on Congress.gov(opens in a new tab)
Introduced
Grasslands Grazing Act of 2025
Sponsor John Barrasso (R). Joined Sep 29, 2025. 2 cosponsors. S. 2787 on Congress.gov(opens in a new tab)
Passed committee
A resolution designating September 30, 2025, as "Impact Aid Recognition Day" to recognize and celebrate the 75th anniversary of the establishment of the Impact Aid program.
Sponsor Mazie Hirono (D). Original cosponsor. 26 cosponsors. S.Res. 406 on Congress.gov(opens in a new tab)
Passed the Senate