South Dakota › Yankton County › South Dakota Senate District 18
2 candidates are tracked for South Dakota Senate District 18 on the November 3, 2026 ballot: Kay Swihart and Lauren Nelson. Candidate information follows official Yankton County election filings; verify with the official election office linked below.
Kay Swihart (Democratic), Lauren Nelson (Republican) are on the November 3, 2026 ballot for South Dakota Senate District 18. Lauren Nelson is the sitting member, per the Legislature's 2026 session roster. Party nominees were chosen at the June 2, 2026 primary, per the South Dakota Secretary of State's 2026 general-election candidate list.
Democratic
Kay Swihart is the Democratic nominee for South Dakota Senate District 18 on the November 3, 2026 ballot, per the South Dakota Secretary of State's 2026 general-election candidate list. This name has not yet been researched.
Republican · Incumbent
Lauren Nelson is the Republican nominee for South Dakota Senate District 18 on the November 3, 2026 ballot, per the South Dakota Secretary of State's 2026 general-election candidate list. Lauren Nelson is the sitting member, per the Legislature's 2026 session roster. This name has not yet been researched.
2 candidates are tracked for South Dakota Senate District 18 on the November 3, 2026 ballot: Kay Swihart and Lauren Nelson. Candidate information follows official Yankton County election filings; verify with the official election office linked below.
Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for South Dakota are on the South Dakota election hub at theballotbrief.com.
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