Looking at the HERO results in Houston I still feel Ds shouldn't go overboard on this issue. It really is easy for conservatives to spin this as a way for predators to go into bathrooms and prey on children however they spin it. HERO advocates had no answer for this in Houston and it appears they still don't.
I don't know, Cruz's Indiana campaign was essentially a single-issue "attack Trump for being pro-trans" campaign and it went absolutely nowhere.
It wasn't that long ago that conservatives attacks gays for being unnatural and predatory the way that they do for the trans population now. It didn't even take 20 years for them to completely and totally lose the war on LGB and it will probably take even less time to lose the war on T.
Hell, it wasn't even 8 years ago (!) that California (!) voted to abolish gay marriage.