White and Christian voters are abandoning the Democratic Party, according to a remarkable new analysis of political party demographics. The Pew Research Center found that there is now a 29-point white gap, the largest ever between the GOP and Democrats. According to the new analysis, non-Hispanic whites make up 57 percent of all Democratic and Democratic-leaning registered voters, down significantly from 76 percent in 1992. By contrast, though the share of GOP voters who are white also has declined since 1992, the change has been much more modest: Currently, 86 percent of Republican and Republican-leaning registered voters are non-Hispanic whites, compared with 93 percent in 1992. As a result of these changes, the 17-percentage-point gap between the share of white voters in the Republican and Democratic parties seen in 1992 has grown to a 29-point gap today.