The 2020 Iowa Caucuses

The Iowa Democratic Party Delegate Selection Plan (PDF)

David Redlawsk op-ed in the Des Moines Register describing some of the planned 2020 changes


The 2016 Iowa Caucuses

2016 Iowa GOP by-laws including Delegate Selection rules

2016 Iowa GOP Polling Summary -

2016 Democratic Polling Summary -

Iowa Caucus Candidate Tracker

P2016 Race for the Qhite House - Iowa

The Iowa Caucus Project

The Iowa Caucus Consortium

The 2012 Iowa Caucuses

The 2012 Iowa Page - Democracy in Action, George Washington University

2012 Iowa Polling Summary -

Academic Work on the Caucuses

2008 Reforming the Presidential Nomination Process Conference at the University of Iowa

University of Iowa Hawkeye Poll Release Archive - Including 2007-2008 Caucus and general election surveys, as well as more recent election news.


Books about Iowa specifically and the presidential nominating process generally
(Links point to the book's page on

John H. Aldrich: Before the Convention: Strategies and Choices in Presidential Nomination Campaigns

John Baron: Vote for Me! The Long Road to the White House

Marty Cohen, David Karol, Hans Noel, and John Zaller: The Party Decides: Presidential Nominations Before and After Reform

Christopher Hull: Grassroots Rules: How the Iowa Caucus Helps Elect American Presidents

Elaine C. Kamarck: Primary Politics: How Presidential Candidates Have Shaped the Modern Nominating System

William G. Mayer and Andrew E. Busch: The Front-Loading Problem in Presidential Nominations

Barbara Norrander: The Imperfect Primary: Oddities, Biases, and Strengths of U.S. Presidential Nomination Politics

John C. Skipper: The Iowa Caucuses: First Tests of Presidential Aspiration, 1972-2008

Peverill Squire: Iowa Caucuses and the Presidential Nominating Process

Steven S. Smith and Melanie J. Springer: Reforming the Presidential Nomination Process

Hugh Winebrenner & Dennis Gifford: The Iowa Precinct Caucuses: The Making of a Media Event, Third Edition


Some sites with information about the 2008 or earlier Iowa Caucuses

Democracy in Action - George Washington University

George Washington University 2008 Caucus page

Pictures from a 2008 Democratic Caucus in Iowa City 2008 Caucus Countdown

A blog about the caucuses from 2008

The Univ of Northern Iowa Caucus survey pages (Survey is now defunct, but the pages are up)

A well done journalist's blog on 2008

Des Moines register Iowa Caucus visits 2008

PBS Website on the 2000 Caucus


First Stop Iowa: A documentary on the 2008 Iowa Caucuses/p>

A video on how to caucus by an interest group

Several how to caucus videos from the Washington Post