I would say the number approaches or is 100%.
Lumping Mitch McConnell in with the RINOs we all oppose is dubious too. His ACU rating is 90%.
"The American people need a break.
Lets screw them all again."
"A political party cannot be all things to all people.
It must represent certain fundamental beliefs
which must not be compromised to political expediency
or simply to swell its numbers."
-- President Ronald Reagan
"We don't intend to turn the Republican Party
over to the traitors in the battle just ended.
We will have no more of those candidates who are pledged
to the same goals as our opposition and who seek our support.
Turning the Party over to the so-called moderates
wouldnt make any sense at all.""
-- President Ronald Reagan
McConnell is one of those I refer to as a "squish" instead of a RINO. He's personally conservative, but has some spinal consistency issues.