The Republican Party has earned a reputation as the anti-science, anti-fact party — understandably, perhaps, given the GOP’s policy of ignoring the evidence for global climate change and insisting on  the efficacy of supply-side economics, despite all the research to the contrary. Yet ironically, it is now the Democratic Party that is wantonly ignoring mounds of social science data that suggests that promoting centrist candidates is a bad, losing strategy when it comes to winning elections. As the Democratic establishment and its pundit class starts to line up behind the centrist nominees for president — mainly, Joe Biden, Cory Booker and Kamala Harris — the party’s head-in-the-sand attitude is especially troubling.

The mounds of data to which I refer comes from Thomas Piketty, the French political economist who made waves with his 2013 book “Capital in the Twenty-First Century.” This paper, entitled “Brahmin Left vs. Merchant Right: Rising Inequality & the Changing Structure of Political Conflict,” analyzes around 70 years of post-election surveys from three countries — Britain, the United States and France — to comprehend how Western politics have changed in that […]

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