The Harvard poll finds that 63% of 18- to 29-year olds “definitely” plan to vote. Their enthusiasm for Biden grew even stronger since September.

The Center for American Progress’ models forecast a huge advantage for Democrats in future elections, based on demographics and voting patterns of today’s youngest generations — even taking account of trends that show that Americans tend to become more conservative as they age.

Its models find an 8% to 18% advantage for Democrats in the popular vote by 2036. Electoral college models, which factor in changing state demographics of these young voters, look even more formidable for Republicans.

Millennials and Generation Z are much more liberal than their predecessors and voted for Democrats in previous election cycles. Voting research shows that the president you vote for as you come of age to vote often determines which party you’ll stick with, too.