In order to measure the strength of the parties in each state, the Major Party Index (MPI) was built by averaging the results of the six major elections that take place in the fifty states. This index allows us to describe the absolute and comparative partisan leaning of each state in each election and identify trends of party strength over time within individual states, among regions, and within the nation as a whole. The MPI sheds considerable light on three general developments: (1) a national change from Democratic dominance in the 1980s to a Republican edge by 2002, (2) significant regional realignments in the South and New England, and (3) a strong trend toward greater consistency between partisan voting at the federal and state levels.

Less than two years ago, Barack Obama was sworn in as president amidst proclamations of a partisan realignment. But in this fall’s midterms, scores of his fellow Democrats lost their jobs. The best evidence suggests that Obama’s signature accomplishment—passage of a healthcare reform bill that had long eluded progressives—played a key role in the historic defeat. It also highlighted the delicacy of partisan regimes, particularly those prematurely designated as realignments by academic or popular observers.

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This book examines major foreign conflicts from the Spanish-American War through Vietnam, arguing that international conflicts have strong effects on American political parties, elections, state development, and policymaking. First, major wars expose and highlight problems requiring governmental solutions or necessitating emergency action. Second, despite well-known curtailments of civil liberties, wars often enhance democracy by drawing attention to the contributions of previously marginalized groups and facilitating the extension of fuller citizenship rights to them. Finally, wars affect the party system. Foreign conflicts create crises - many of which are unanticipated - that require immediate attention, supplant prior issues on the policy agenda, and engender shifts in party ideology. These new issues and redefinitions of party ideology frequently influence elections by shaping both elite and mass behavior.

Much of the commentary in the wake of last month's presidential election has focused on the magnitude and historic aspects of Barack Obama's victory and the deteriorating economic environment in which it played out. Little thought has been given to the influence of foreign affairs in the election. Yet even in this year's contest, which appears to lend considerable support to economic-based theories of elections, international events clearly played an important role by shaping the nomination process for both major parties and in Obama's selection of Joseph Biden as his running mate.