It is true that the authors, Ferguson, Jorgenson, and Chen, conclude "The Tea Party and its allies cannot sensibly be treated solely in terms of mass politics." They also note, of course, that Obama, the Democratic Party, and their allies cannot be treated solely in terms of mass politics. Indeed, that is the gist of Ferguson's extensive writings: Capital intensive and pro-free-trade industries supported Roosevelt, and among the supporters were Standard Oil and an array of investment banks that opposed JP Morgan Jr. In other words, the authors are willing to concede that there is public support for free market-based candidates just as there is public support for collectivist ones.
That shows considerable integrity. It is inconceivable to most collectivists that average Americans might prefer freedom; it is inconceivable to them that hardworking, blue collar workers might prefer lower to higher taxes; it is inconceivable to them that those who prefer to support themselves free of government authority might prefer being paid fairly for their labor instead of living off government subsidies, welfare scams, or the Social Security pyramid scheme.
Although I disagree with their politics, the authors of the study are exceptional scholars who have carefully tested the lead author's, Thomas Ferguson's, insightful investment theory of politics. They write this: