SIOUX FALLS, S.D. (AP) – Secretary of State Jason Gant has trained workers in three rural South Dakota counties on using electronic poll books and vote centers. Hyde, Sully and Potter counties will use the new voting system during the June 5 primary election. It’ll be the first time vote centers and electronic poll books will be used outside the city of Sioux Falls. An electronic poll book uses a laptop to check in voters. The vote center concept lets voters cast their ballots anywhere in the jurisdiction rather than being limited to the precinct in which they live. The two systems were used in Sioux Falls city and school elections last year and this year. Gant says the vote center model was ideal for rural counties where many voters don’t regularly come into town.