Horizon · our Election Day forecast: polls, plus fundamentals like incumbency, fundraising and past results.

Pulse · polls only: where the races stand today, with no fundamentals and wider uncertainty.

What's the difference?

South Dakota · South Dakota Legislative District 18 · Updated Oct 16, 2026

Lauren Nelson

RepublicanIncumbent

Electoral history

Earlier races in South Dakota, newest first, matched by name in the results archive.

  1. 2024

    State Senate · LD-18 Nov 5, 2024

    R · 57.2% · 6,189 votes

    Won

Opponents in 2026