1 in 5 LGBT adults isn’t registered to vote, despite high stakes.

Protesters unfurl banners during a CNN town hall as Democratic presidential candidate Pete Buttigieg talks to moderator Anderson Cooper. (Robyn Beck/AFP/Getty Images)

Some 21% of LGBTQ adults aren’t registered to vote, according to a study released this week by the University of California, Los Angeles’ Williams Institute. That’s compared to an estimated 17% of non-LGBTQ adults.

The finding, part of a larger poll of 2,237 people that…