Young voters keep moving to the left on social issues, Republicans included.

“’This should be an alert to the Republican Party as they think about generational replacement,’ said Elizabeth Bennion, a professor of political science at Indiana University South Bend.

Each succeeding generation of Americans tends to be more progressive than those that came before, Ms. Bennion noted, a trend that potentially poses a long-term threat to the Republican Party’s power.”

One caveat. That more young people vote.