I have heard it said that conservative make up about 40% of American voters. This is probably close. I suspect Liberals a bit less (35%) and the rest moderates.
Conservative can attract a majority for a large part of their agenda. National Security and Crime will usually garner majority support. Social issues like Gay Marriage and Abortion are more complicated. The majority support conservatives on this, but don't what the government meddling one way or the other in people's lives.
Unfortunately, to balance the budget, people want it but don't seem willing to gore their own ox. Our government has some many middle class subsidies benefits, that modest trimming can usually be grandstanded by the left, making change difficult, therefore spending is out of control.
I would say (although I do not know) 40% representing conservative votes would include RINO's too. I haven't been able to really figure out what a RINO is? Are they just less conservative? Meaning they believe in some government involvement. Business sure likes government when it suits their needs. Do we call these folks RINOs? I guess I haven't figured it out yet. I think it is only ideology anyway. We don't live in that kind of world.