How to vote · 2026
South Dakota
Any voter can request a mail ballot
Every date below comes from the South Dakota election office and links to the page that states it. Election Day is Tuesday, November 3, 2026.
Dates and rules
Registration, mail ballots, and early voting
Registration deadlineOctober 19, 2026Register in person or by mail (received) by Oct. 19, 2026 (15 days before). No online registration and no same-day registration.
Mail-ballot request deadlineNovember 2, 2026
Mail ballots first sentSeptember 18, 2026Absentee voting begins 46 days before Election Day (Friday, Sept. 18, 2026; SDCL 12-19-1.2); ballots are mailed to applicants from that date. Written applications accepted until 5 p.m. the day before the election.
Return ruleMust be received by close of polls on Election Day
Early in-person votingSeptember 18, 2026through November 2, 2026 · In-person absentee voting at county auditor offices from Sept. 18, 2026 (46 days) until 5 p.m. Nov. 2.
Official SD election site ↗Dates last verified against the official site September 1, 2026.Sources: [1] South Dakota SOS 2026 election information: absentee voting begins Sept. 18, 2026[2] USA.gov directory of official state election offices[3] Mail voting Sept. 18-Nov. 3, 2026[4] CEIR 2026 voter registration deadlines (June 25, 2026 dataset; per-mode deadlines and same-day registration windows)[5] NCSL Table 7: statutory rule for when absentee/mail ballots are mailed[6] NCSL Table 5: statutory absentee ballot application deadline[7] NCSL Table 11 (updated Dec. 2025): ballot receipt/postmark deadline
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The full table of mail-ballot send dates, registration deadlines, and early-voting windows for all fifty states and DC, plus the documented record of government actions on mail voting this cycle.
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