This insightful resource captures the evolution of American politics and elections in the 21st century, explaining the identities and roles of lobbyists, activists, politicians, and voters. Featuring contributions from distinguished researchers and academics in the areas of political science, social science, and journalism, this encyclopedia explores the contemporary political landscape, offering an opportunity to compare and contrast related decisions, events, and statistical information from the recent past. This volume includes 220 alphabetically arranged entries on American voting and related topics, as well as maps and tables that provide insights into American voting trends in the 21st century.