My bar is simple. RINO stands for Republican In Name Only,
Is a "Republican" official voting with the Democrats on a majority of issues? (Kirk, Jeffords, etc.) If so, they're a RINO. If they're voting with the GOP on a majority of issues, they're not a Republican In Name Only.
Some freepers have set the bar so low that Republicans who agree with them 95% of the time are "RINOs" because they don't follow that freeper's bidding on every bill ever proposed. Every politican is a "RINO" by that definition.
What about the most important issue of our time??? Does that count the same as naming a Post Office after Robert Byrd?