South Dakota
| Johnson, Tim - (D – SD) | Class II |
| 136 HART SENATE OFFICE BUILDING WASHINGTON DC 20510 | |
| (202) 224-5842 | |
| e-Mail Senator: johnson.senate.gov/contact/ | |
| Thune, John - (R – SD) | Class III |
| 493 RUSSELL SENATE OFFICE BUILDING WASHINGTON DC 20510 | |
| (202) 224-2321 | |
| e-Mail Senator: thune.senate.gov/public/index.cfm?FuseAction=Contact.Email | |
