NEW YORK (AP) — Activists urging more states to ban gay conversion therapy for minors are expecting major gains in 2019, thanks to midterm election results and the buzz generated by two well-reviewed films.

Fourteen states and the District of Columbia have already enacted laws prohibiting licensed therapists from trying to change a minor's sexual orientation. Leaders of a national campaign to ban the practice are hopeful that at least four more states — Colorado, Maine, Massachusetts and New York — will join the ranks in the upcoming legislative sessions.

"We'd be disappointed if we don't get...