The first signs that the Republicans were in for a terrible November in 1974 came in February of that year. Pennsylvania’s 12th District, nestled in the Appalachian Mountains of West Central Pennsylvania, had elected a Republican to Congress in every election for a century except in the very worst Republican years: 1922, 1934, and 1948. In 1972, it had reelected its 12-term congressman, John P. Saylor, with 68 percent of the vote.