Together with black enfranchisement, immigration has transformed American political parties. These new voters have disproportionately supported the Democratic Party. The nonwhite share of the Democratic vote rose from 7 percent in the 1950s to 44 percent in 2012. Republican voters, by contrast, were still nearly 90 percent white into the 2000s. So as the Democrats have increasingly become a party of ethnic minorities, the Republican Party has remained almost entirely a party of whites.