A new survey shows a dramatic shift in attitudes toward favoring gay marriage among a younger generation of white evangelicals, a group considered to be one of the most conservative on the issue.

Just a decade ago, the gap between younger evangelicals and older evangelicals on the issue was not wide, according to the Pew Research Center. But a new survey suggests that the generational divide has grown much wider, with about half of evangelicals born after 1964 now favoring gay marriage.

According to Pew, 47 percent of Generation X/millennial evangelicals (those born after 1964) favor gay marriage, compared with 26 percent of boomer and older evangelicals (those born between 1928 and 1964).

“I think a shift is inevitable. It’s just a matter of how long,” said Julie Rodgers, a lesbian who once worked for evangelical Wheaton College (Ill.). Read more via Washington Post