We do have several factions. In America all major parties are made up of factions. That's the way it always has been, but we need not discuss that now.
BTW, my definition of RINO ordinarily requires that a candidate have run for office before as a Democrat ~ which Perry did ~ and he won. Ronald Reagan had not earlier run as a Democrat. He ran only as a Republican, and did so several times.
Technically, Reagan was not a RINO. Strom Thurmond was a RINO.
RINOism has nothing whatsoever to do with ideology ~ it has to do with partisan political affiliations!
Your definition of RINO is peculiarly your own. Everyone else considers it to mean exactly what you think it doesn't mean:
RINOism has nothing whatsoever to do with ideology ~ it has to do with partisan political affiliations!
You live in your own mind too much. No one else anywhere thinks RINO means someone who used to run as a Dem and won. It has to do with holding liberal positions on issues. Sheesh.