Jeffrey Bell: The supply-side populist was prescient about American politics.

His 2012 book, “The Case for Polarized Politics: Why America Needs Social Conservatism,” was also prescient in predicting that a GOP candidate could win the White House by taking Upper Midwest states that are more socially than economically conservative.

.. he long believed that socially conservative Hispanics were a natural GOP constituency. “Background doesn’t matter,” he once said, “if you are articulating views that are populist, which I define as optimism about people and their ability to make their own decisions, as opposed to letting elites do it for them.”