America’s founders deeply mistrusted political parties. James Madison decried “the mischief of faction” while George Washington, in his farewell address, warned that “the spirit of revenge natural to party dissension” might lead to despotism. But the disunity that Washington warned that parties would bring has always been present in America, and still is. What political parties can do at their best is to make disunity manageable by facilitating compromise and preventing political conflict from turning into violence.

Sam Rosenfeld (an associate professor of political science at Colgate University) and Daniel Schlozman (an associate professor of political science at Johns Hopkins University) have together written the new book The Hollow Parties: The Many Pasts and Disordered Present of American Party Politics. It is, essentially, a historical narrative of American politics as told through its parties, using the techniques of social science. Schlozman and Rosenfeld argue that American parties historically had been highly successful at organizing political choices and political conflict, and providing a way of organizing collective action toward collective goals.

But in recent decades, they assert, both the Republican and Democratic parties have become hollow: unable to organize themselves internally (in terms of making party decisions) or externally (in terms of shaping conflict in the broader political arena). They have lost critical core functions — including voter mobilization, fundraising, ideological advocacy, and agenda setting — to para-party organizations that Schlozman and Rosenfeld term “the party blob.” So even as political polarization has in many ways reinforced Americans’ partisan identities and strengthened party leaders' command over rank-and-file legislators, the parties have become less and less capable of fulfilling their proper functions.

In this podcast discussion, Schlozman and Rosenfeld discuss how the hollowing-out of the Republican Party has made it vulnerable to Donald Trump’s hostile populist takeover; the stronger party establishment of decades past did a better job of erecting guardrails against right-wing extremism and would have prevented the party’s nomination from going to a personalist leader like Trump. A similar process of hollowing-out in the Democratic Party has rendered it largely ineffectual in important ways; it has become what Schlozman describes as “a party that has been less than the sum of its parts and that has been unable to figure out its post-New Deal purpose.” But the two authors describe ways that party politics have strengthened the American experiment in the past and hold out hope for party renewal in the future.