Slipshod statistical analysis. Pappy Bush (CINO) lost. Dole (CINO) lost. McCain (CINO) lost. Romney (CINO) lost. Dubya is, demonstrably, the aberration; not the rule.
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Bush 2 the compassionate conservative is also not a very healthy exception. The thinnes ot wins the second time around, and one whose policies led to the routs of ‘06 and ‘08. Now people quake over the excessive police state powers of DHS, TSA, etc. Who started that pray tell? Bush 2 had a conservative veneer and jargon, but the same globalist, big government core as his father.
There are millions of "CINO's" who are registered Republicans and vote in their states' primaries. We can work on this fact, but we can not ignore it.