Keep in mind how much of the state's population lives in the lean social liberal or social liberal counties.
Of the Historically Republican counties in PA (by my definition, those that have not voted DEM unless in 1912, 1932, 1936, or 1964) since 1856, Butler, Tioga, McKean, Bradford, and Susque are all "social conservative" counties. While Union is a "lean social conservative" county.
And if we include Potter as a historically Republican county (D+Populist>50% in 1892), that is a "frighteningly social conservative" county.