Views on Tariffs cut across Conservative/Liberal lines. But generally the Republicans in the 1860s were the more liberal party, the Democrats the more Conservative. It was not until McKinley in 1896 defeated Bryan, that this changed; and then not really with any steady pattern until Franklin Roosevelt; and even then, not really with a dominant pattern until Reagan.
But New Jersey is really sick. It has apparently bought the Leftwing values of those trying convert the American tradition into a new Socialist revision of history, to fit in nicely with their revision of reality in the other Social Sciences--see Myths & Myth Makers In American "Higher" Education. If people do not rise up and fight this school district by school district, they will see New Jersey further left than Massachusetts.
William Flax Return Of The Gods Web Site