Government affairs
South Dakota
| Registration deadline | Deadline to request mail-in ballot | Deadline to return mail-in ballot | Early voting |
| Oct. 24: In-person or by mail (received by Oct. 24) | Nov. 7 | Ballot must be received by Nov. 8 | Sept. 23 - Nov. 7 |
House
| District | Name | Party | Voted for Postal Service Reform Act | Cosponsored Social Security Fairness Act | Cosponsored Federal Retirement Fairness Act |
| SDAL |
Dustin Johnson |
R | YES |
Senate
| Name | Party | Voted for Postal Service Reform Act | Cosponsored Social Security Fairness Act |
| John Thune | R | YES | |
| Mike Rounds | R | YES |
