A sign points to a polling place at the Rapid City Public Library during a South Dakota primary election on June 2, 2026. (Photo by Meghan O'Brien/South Dakota Searchlight)If Obi-Wan Kenobi were here, he’d say he’s feeling a great disturbance in the force. Fortunately it’s not the planet killing kind of disturbance, but one that’s shaking up politics in South Dakota. Traditions and norms we thought we could count on are being shattered. Politica…