I'd bet that more conservative candidates have run in at least some of those primaries and consistently lost.
I think this point would require some additional study. The party "machine" generally gets behind one candidate; overt or otherwise? Given the limited resources of the party, they choose the most "electable"; not necessarily the most conservative. The others have to make do with their own resources, regardless of their conservative credentials, if they are even willing to fight the battle at all. Would it not be helpful to the conservative cause if we could find a way to channel additional resources to the most conservative candidates?
I'm not saying HopefulPatriot's plan is necessarily the answer, but it has the potential to make significant contributions IMHO. The problem I see here is there hasn't been an honest debate on the nuts and bolts of the plan; maybe because it's not that easy to follow in its present format.
FGS
"Given the limited resources of the party, they choose the most "electable"; not necessarily the most conservative."
Of course, this is how politics is played, dems do it too. Each party chooses the candidate as close to their ideology, but also electable, to support.
Choosing the most conservative instead of the most electable will result in a dem majority in the Senate and House.
I don't like it but that's the way it is.