Please list this great majority of true conservatives with a strong conservative agenda. I sure can list the group of true liberal/socialist/commie democrates who fight 24/7 for their causes. Show me the opposite besides a handfull at best.
The Republican Party is an alliance. The conservatives wield a much greater influence over public policy by virtue of being about three fourths of that alliance. I can only think of a few Republican Senators who are completely unreliable and another few who are far too liberal, so the net is about 6-7 RINOs that make it difficult to rule as a majority in the Senate. The House of Representatives, where the rules are different, and the White House are in better shape than the Senate.