You have some good points when talking about conservatives that compromise when they are in power.But democrats don't ever compromise.Look what Reid did in the Senate.No!compromise at all!The last Democrat that compromised was Bill Clinton when he lost the House and Senate.The Presidential election is won based on the moderates in the middle who can go either way. It makes no sense to put up a Republican candidate that is pure right wing conservative if that person can not drag the moderates to the right enough to vote for the republican ticket.
While in theory a pure right wing conservative sound good (like a Tea Party), it will not work as the moderates might not want pure conservatism. It is all about compromise.
We have undergone 6 years, plus two to go, of Progressive liberalism (same as the Clintons) and if we do not pull the moderates to the Republican party we may get 4 to 8 more years of it. At the end of that period the Progressive liberals will have destroyed America as we once knew it.
Let's not hear the call for pure conservatism, but a compromise that will drive the Progressive liberals out of control.
Why do we always have too!Reagan wasn't in the middle and he sweep the country.