Yeah, and there is already a Republican litmus test out in the open. Actually a relatively decent litmus test is written every four years at the RNC national convention. Any Republican who can't support Republican-written, Republican-approved Republican platform is clearly a RINO.
I don't know what definition of RINO Jim Robinson is thinking of, but this one is a good start. I do know that this is a Conservative site, not Republican, and so the Republican Platform is merely a start. But given how many leaders it would out as RINO/CINOs, it's a real good start.
(Bob Dole: "Who reads the platform?")
Actually a relatively decent litmus test is written every four years at the RNC national convention.
***And it gets ignored every four years. Not only that, but RINOs are allowed to operate freely on this website. If we can’t get a litmus test going here, there’s no freeping hope of having one with the GOP platform.