Buckley’s rule only applied when there were two parties in opposition. Provably that is no longer the case. All the GOP support for amnesty, screwing vets, investigations that go nowhere and a thousand other daily examples posted on FR show that to be unarguably the case.
How do you vote for the more conservative of two when both are fully on board with opposing conservatism? I want someone still clinging to the GOP to explain why their guys are closeted democrats acting in Obama, not America’s interest. Then explain why we should assist them by empowering them with our vote.
Your premise is incorrect. Buckley's rule was never about two opposing parties.
It was first articulated by Bill Buckley to inform employees of National Review who the magazine would officially endorse and support in the 1964 Republican primary race between Nelson Rockefeller and Barry Goldwater.
Buckley announced that “National Review will support the rightwardmost viable candidate.” Everyone knew he meant Goldwater, and the Buckley Rule was born.
Born to guide conservatives in Republican primaries.
Those honest conservatives who voted in the Republican primary in Kentucky voted for Matt Bevin, it's as simple as that.