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Alan Abramowitz: The Transformation of the American Electorate

[Dr. Alan Abramowitz is the Alben W. Barkley Professor of Political Science at Emory University, and the author of Voice of the People: Elections and Voting Behavior in the United States (2004, McGraw-Hill). He can be contacted via email at polsaa@emory.edu.]

The election of America's first black president has been widely hailed as an historic event. However, much less attention has been paid to the demographic trends which made that event possible and which will continue to affect elections and politics in the United States far into the future. In this article I examine those trends and their consequences for the American party system.

Without question, the most important change in the composition of the American electorate over the past several decades has been a steady increase in the proportion of nonwhite voters. This trend has been evident for at least 50 years but it has accelerated in the last quarter century. It is a result of increased immigration from Asia, Africa and Latin America, higher birth rates among minority groups, and increased registration and turnout among African-Americans, Hispanics, and other nonwhite citizens. Moreover, this shift is almost certain to continue for the foreseeable future based on generational differences in the racial and ethnic composition of the current electorate and Census Bureau projections of the racial and ethnic makeup of the American population between now and 2050.

Figure 1 displays data from national exit polls on the changing racial composition of the U.S. electorate between 1992 and 2008. In the 16 years between 1976 and 1992, the nonwhite share of the U.S. electorate increased only slightly--going from 11 percent to 13 percent. However, in the 16 years between 1992 and 2008 the nonwhite share of the electorate doubled, going from 13 percent to 26 percent. Helped by an aggressive Democratic registration and get-out-the-vote campaign in African-American and Hispanic communities, the nonwhite share of the electorate increased from 23 percent in 2004 to 26 percent in 2008 with African-Americans going from 11 percent to 13 percent, and Hispanics going from 8 percent to 9 percent.

Since the 1970s the composition of the nonwhite electorate has itself been changing, with Hispanics (who are included here in the nonwhite population although they can be of any race) and Asian-Americans comprising a growing share of nonwhite voters. Both of these groups continue to be underrepresented in the electorate relative to their numbers in the voting-age population due to high rates of noncitizenship and relatively low registration and turnout rates. However, both groups are growing rapidly. Hispanics are now the largest minority group in the U.S. population and their share of the electorate has been rising steadily, reaching 8 percent in 2004 and 9 percent in 2008.

The growth of the nonwhite electorate, beginning with African-Americans in the 1960s and 1970s and continuing with Hispanics and Asian-Americans since the 1980s, has had profound consequences for the party system and the electoral process in the United States. Along with liberal whites, nonwhite voters constitute the electoral base of the modern Democratic Party while conservative whites constitute the electoral base of the modern Republican Party....
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