Outrage over how big money influences American politics has been boiling over this political season, energizing the campaigns of GOP nominee Donald Trump and former Democratic candidate Sen. Bernie Sanders alike. Citizens have long suspected that “We the People” increasingly means “We the Rich” at election time.

Yet surprisingly, two generations of social scientists have insisted that wallets don’t matter that much in American politics. Elections are really about giving the people what they want. Money, they claim, has negligible impact on elections.

That was a good line for Cold War propaganda, and good for tenure, too. Corporate titans seized upon it to argue that their money should be freer to flow into political campaigns. Not only billionaires, but academics argued that more money in elections meant more democracy.

Even today, many academics and pundits still insist that money matters less to political outcomes than ordinary citizens think, even as business executives throw down mind-boggling sums to dine with politicians and Super Pacs spring up like mushrooms. The few dissenters from this consensus, like Noam Chomsky, are ignored in the U.S. as “unpersons,” though they are enormously respected abroad.

This is a scandal. […]