WILSON, Wyo. — For much of the morning at the place where Liz Cheney was expected to cast a vote for herself in Tuesday’s Republican primary, there were more reporters than voters waiting to cast ballots. Yet at times, the line to enter the barn-red community center in Wilson — a wealthy, mostly white enclave of fewer than 2,000 people at the base of the Teton Pass — extended nearly to the street. Longtime residents said they had never seen anything like it. The voters who rode up to the city’s lone polling site in elite performance bicycles, Teslas and...