As long as a vote for a Republican is a vote for continued non-constitutional government, such a vote won't be cast by me.
The author doesn't get the point. Conservative third-party candidates siphoning off votes from Republicans isn't a sign of support for progressive Democrats, it's a sign of digust with a Republican party that has forsaken conservatism and constitutionalism. For most of my life Republicans have been merely a progressive-lite party, which is entirely unacceptable. If the Republicans would have taken principled stands all along, they may have been soundly rejected for a while (nb: Goldwater), but I assume everyone here knows that progressive policies are guaranteed to fail. Early failure of progressive policies would have been far preferable than waiting until 2010, when the guaranteed failures are now far more expensive to fix.
Carter, Clinton, and Obama are all great examples of the intolerance the electorate has for progressive governance. They have the advantage of having the media on their side and the electorate having a short memory and being gullible. Republicans who value media approval (as if they'll ever get it) more than electorate approval, and who value ego satisfaction more than constitutional principles are not worthy of anyone's vote.
Any so-called conservative who casts a vote for a progressive Republican is merely enabling progressivism and helping to undermine our constitution.
Yep, it's just that simple.