Herseth Sandlin lost her re-election bid in 2010.
Rep. Stephanie Herseth Sandlin (D-S.D.)
- District: South Dakota -- At Large
- Residence: Brookings
- Born: December 3, 1970; Aberdeen, S.D.
- Religion: Lutheran
- Family: Husband, Max Sandlin; one child
- Education: Georgetown U., B.A. 1993 (government); Georgetown U., M.A. 1996 (government); Georgetown U., J.D. 1996
- Military Service: None
- Political Highlights: Democratic nominee for U.S. House, 2002; U.S. House, 2004-11
- Elected: Elected: 2004 (3rd full term)
- Committee Assignments: Agriculture (Conservation, Credit, Energy & Research; General Farm Commodities & Risk Management); Natural Resources (National Parks, Forests & Public Lands); Veterans' Affairs (Economic Opportunity - Chairwoman); Select Energy Independence & Global Warming
State Information: South Dakota -- At Large
Election History
| Year | Election | Candidate | Votes | Percent |
| 2010 | general | Kristi Noem (R) | 153,703 | 48.1% |
| Stephanie Herseth Sandlin (D) | 146,589 | 45.9% |
| B. Marking (I) | 19,134 | 6% |
| 2008 | general | Stephanie Herseth Sandlin (D) | 256,041 | 67.6% |
| Chris Lien (R) | 122,966 | 32.4% |
| 2006 | general | Stephanie Herseth Sandlin (D) | 230,468 | 69.1% |
| Bruce Whalen (R) | 97,864 | 29.3% |
| Larry Rudebusch (LIBERT) | 5,230 | 1.6% |
| 2004 | general | Stephanie Herseth Sandlin (D) | 207,837 | 53.4% |
| Larry Diedrich (R) | 178,823 | 45.9% |
| Terry Begay (LIBERT) | 2,808 | 0.7% |
| 2004 | special | Stephanie Herseth Sandlin (D) | 132,420 | 50.6% |
| Larry Diedrich (R) | 129,415 | 49.4% |
| 2002 | general | Bill Janklow (R) | 180,023 | 53.4% |
| Stephanie Herseth Sandlin (D) | 153,656 | 45.6% |
| Terry Begay (LIBERT) | 3,128 | 0.9% |
Vote For President
| Year | Democrat | Republican | Independent |
| 2008 | Barack Obama: 45% | John McCain: 53% | |
| 2004 | John Kerry: 38% | George W. Bush: 60% | |
| 2000 | Al Gore: 38% | George W. Bush: 60% | |