One anonymous discussion site had a thread I came across discussing "Gay Republicans".
The thread's original poster writes, "Can someone please explain to me how someone can be a Republican and gay? Is money more important than your own equal rights? I want to understand. I've tried to understand. Are they perhaps racists?"
A theory posted with which I agree most was written as follows (I will quote that response. But I'm not putting it into Just Us Boys-forum-style quote because there is too much text for one to want to read in italics):
"Most grew up conservative and never evolved. Many are situationally closeted, lead highly compartmentalized lives and most operate under some form of cognitive dissonance. Self-loathing and a lack of awareness about it are common.
"Definitely many are racists, xenophobes and misogynists. Many cherry-pick their gay causes, if any. They're pro-military and pro-family (in the trueist sense), so some are/were activists against DADT or for marriage equality. Most are indifferent to all gay rights, valuing lower taxes and no safety net for the poor over their own civil rights. They're largely silent, publicly, on ENDA, but privately I'd bet most oppose it, since it protects the economically disadvantaged, adds another government regulation for "job creators" and interferes with the free market. Never mind that somewhere, some faggot is getting fired for no other reason. They're better than that faggot and he probably deserved to get fired anyway. Realize that this attitude probably comes from someone who is closeted at work and has spent their entire lives consciously projecting a 'straight-acting' persona. It's the same 'I've got mine' mentality that is endemic to the [Republican] Party. They're middle class and stupid enough to believe that currying favor with the rich by attacking the poor will benefit them someday.
"They are callous, craven, unfathomably stupid opportunists who put their own (perceived) economic interests above everything else in the world."
In the 2012 United States presidential election, nationally 22 percent of LGBT persons voted Republican for Mitt Romney. An answer as to why there are any LGBT persons who vote Republican may come down to just one theory after the next. The background, of such individual, is what I believe shaped a "Gay Republican," yes, but that the Gay Republican votes for a party that is against equality for LGBT persons because the Gay Republican does not care about LGBT persons—generally to begin with—nor does a Gay Republican care about discrimination against LGBT persons, and generally does not care about any future (including marriage equality) of LGBT persons.