The State of the Parties 2018 brings together leading scholars of parties, elections, and interest groups to provide an indispensable overview of American political parties today. The 2016 presidential election was extraordinary, especially the unexpected nomination and election of Donald Trump to the White House. What role did political parties play in these events? How did the party organizations fare? What are the implications for the future? Scholars and practitioners from throughout the United States explore the current state of American party organizations, constituencies and resources at the national, state and local level. Contributions by Alan Abramowitz, Joseph Anthony, Julia R. Azari, Paul A. Beck, Edward G. Carmines, Tyler Chance, Daniel J. Coffey, David B. Cohen, Diana Dwyre, Michael J. Ensley, John C. Green, Richard Gunther, Jennifer A. Heerwig, Paul S. Herrnson, Caitlin E. Jewitt, David C. Kimball, Robin Kolodny, Drew Kurlowski, Seth Masket, Erik C. Nisbet, Sam Rosenfeld, Daniel Schlozman, Mildred A. Schwartz, Daniel M. Shea, Doug Spencer, Wayne Steger, Jeffrey M. Stonecash, Eric C. Vorst, Michael W. Wagner, and Steven W. Webster.