Is that really a gain though? How many gays are voting for Trump?
Probably about 20% of the population that identifies as LGBT, to be honest. Republicans usually get around there, and I assume Trump will too. But, that's not the point. HB2 in NC i s one of the reasons we have a great shot at flipping the state, getting the Senate seat and taking back the Governorship. Homophobia is, surprisingly, getting less and less acceptable, especially with moderates, college educated whites and women. almost everyone knows someone who is gay or has a family member who is gay. This transcends nationality, ethnicity, socioeconomic status, religion and race. There may be a few people out there who are terrified of Trump, but they think Pence will be in control so they're still open to vote. Dad needs to go in and make Pence just as gross as Trump.
Interestingly, the one issue in which I don't think Trump is a total asshole is LGBT issues. I genuinely do not think he has a problem with gay people. He's attacked Rosie for many, many things, but he's never (so far as I know) brought up her sexuality as something to use against her.