The Tea Party soared to national prominence in 2009 and remains a force to be reckoned with. In November 2012, some 45 million registered voters, a fifth of the U.S. electorate, reported in a Fox News exit poll that they identified with the Tea Party. To build political power through the GOP, in the 2010 midterm elections Tea Party factions helped right-wing Republicans win super-majorities in many states, secure gains in the U.S. Senate, and take control of the House of Representatives. Democrats may have rebounded in 2012, yet more than nine of ten Tea Party-backed Republican House candidates also won election or re-election.

Why is the Tea Party enjoying so much success? Partisans and some commentators point to its stated support for fiscal responsibility, lower taxes, and reduced regulation. But support for such long-standing conservative preferences is not all we see in Tea Party politics. Many Tea Party goals – and the angry style of politics – are anything but “conservative” in the sense of favoring social stability. Tea Partiers make flamboyantly extreme claims about President Obama – for example, that he wants to confiscate guns from Americans in order to facilitate massacres of whites. And they have urged Republicans to refuse to raise the debt limit and default on America’s debts, even if that would forfeit our nation’s good credit rating and push the world economy into financial crisis.

Getting at the true wellsprings of the Tea Party requires that we look again at what the late historian Richard Hofstadter famously called the “paranoid style in American politics,” a recurrent tendency characterized by “heated exaggeration, suspiciousness, and conspiratorial fantasy.” In a survey I directed between January and March 2011, questions were put to 1,504 adults across the country. The results show that the paranoid beliefs and political style Hofstadter described have recurred in the Tea Party upsurge of the early 21st century. more...