The Amish are numerous in the all-important swing state of Pennsylvania, and yet only a small minority of them vote in elections. They’re being targeted this year in the latest effort to register more of them to vote. Republicans are seeking their votes through billboards, ads, door-to-door canvassing and community meetings. Republican campaigners see the Amish as receptive to GOP talking points — smaller government, less regulation, religious freedom. Researchers say most of the Amish don’t register to vote, reflective of the Christian movement’s historic separatism from mainstream society, just as they’ve maintained their dialect and horse-and-buggy transportation.