John Thune
Party: Republican
Chamber: Senate
State: South Dakota
| Year | Grade | Score | Rank |
|---|---|---|---|
| 2023 | B- | 73% | 13 |
| 2022 | C+ | 74% | 31 |
| 2021 | B | 81% | 26 |
| 2020 | D | 37% | 42 |
| 2019 | D | 25% | 39 |
| 2018 | C- | 49% | 29 |
| 2017 | B+ | 80% | 34 |
| 2016 | C | 61% | 32 |
| 2015 | B | 75% | 31 |
| 2014 | B- | 65% | 24 |
| 2013 | B | 80% | 26 |
| 2012 | B- | 70% | 28 |
| 2011 | B+ | 86% | 24 |
| 2010 | A | 99% | 6 |
| 2009 | A | 91% | 12 |
| 2008 | B | 61% | 18 |
| 2007 | B | 68% | 27 |
| 2006 | B+ | 79% | 29 |
| 2005 | B- | 63% | 46 |