I think this may have had something to do with the Koch brothers starting various astro-turf groups like the Tea Party. its a huge threat to the rank and file GOP. the GOP had to pull too far to the left during the last Presidential election to gain more votes and still lost. the Koch's didn't like that at all.
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so the right wing splits along ideological lines again. it guarantees a win for the Dems and Soros.
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our constitutional republic seems to be taking a detour into plutocracy.
but I'm a dyed in the wool pessimist.