No one is saying any of those things.
What they are saying is:
1. Amnesty or you'll lose the next election
2. Gay marriage or you'll lose the next election
4. More affirmative action or you'll lose the next election
Respect human lives and see all people as people, not just ones that look and act exactly like you. Believe that all men are created equal.
In regards to "amnesty", I discussed that in another thread, but no one wanted to engage in that discussion. Immigration is broken. Rubio proposed a darn good fix that is all around pretty damn conservative (strengthen borders, require proficiency in English, make the path to citizenship 13 years). That ain't amnesty.
More welfare benes or you'll lose the next election
Where are you seeing that? Not from me, or anyone that I've heard that even entertains the idea of ever voting Republican. Small government is the one true tenant of the Republican party that could keep it alive.
5. Curb global warming or you'll lose the next election
Don't reject science outright. Concede that when the scientific community is 99+% in consensus that a scientific phenomenon is occurring, they probably have a way better understanding of the situation than those who don't. I don't know shit about cars, so when I take my car to the mechanic, I trust that he has a pretty good idea why my motor won't start. I'm not so arrogant to believe that he can't possibly know just because I don't understand it.
What you can do about global warming, is admit it exists, and start from there. Right now, we're given the choice of the party that's shitting their pants in hysterics about lowering your carbon footprint, abandoning fossil fuels and nuclear energy, exaggerate the effects of things like fracking, etc....OR the party that can't even admit that it's a thing that's happening at all, despite mountains of scientific evidence suggesting it does. And it's not an agnostic "Meh, maybe it is happening, maybe it's not" type of attitude, it's a defiant "It's not happening. We're not talking about it. Moving on." type of attitude. If the subject could be approached like adults, then we could have an adult conversation about how much environmental protection is appropriate, instead of a mentality that anything potentially good for the environment is inherently bad and not worth even talking about.