To win elections you have to build coalitions.
But coalitions have to be rooted in principle or they have no purpose, and if you win you haven’t won anything. Especially if you intend to build coalitions, especially if you plan on compromising in order to put a majority together, you have to be clear on principle, and your philosophical compass has to be in very good working order or you will lose your way.
And again, if in building your coalition you’ve compromised away the very thing you were trying to accomplish, then winning wins you nothing at all.
When Newt Gingrich proposed the Contract With America, every Republican standing for election in 1994, House and Senate, signed onto it, but it was not so very long after January 1995 that we discovered many of those politicians had only done so for the PR benefit, they were not sincere in its goals and ideals.
Gingrich had a majority-conservatives Republican conference in the House, yet time after time, he allowed a handful of liberal Republicans to block, stall and quash good legislation, two dozen or so people got their way over all those other conservatives and the wishes of many, many of the American people who thought they were getting one thing and were constantly patted on the head with the baloney about how they couldn't get it all done immediately, we had to be patient, etc., etc., etc.
Done with the lies, had enough of this stuff. No, it doesn't have to be a "purely right-wing majority" but Gingrich and many of his fellows have demonstrated that even with a large right-wing majority, he wasn't sincere about accomplishing that which he propounded and what so many of us truly wish from our government.