Unfortunately it doesn’t.
The way the GOPe leadership looks at this is that Conservatives have nowhere to go. Even if we choose not to vote, we won’t vote for a credible opponent to the Republicans (i.e. a Democrat). So, if they lose one Conservative vote to gain one “Moderate” vote, they see that as a net gain of one vote - the Moderate counts as two votes because the Democrats have lost his vote and the ‘Pubbies gained it.
And so the Republican Party is driven inevitably leftward.
I think most Republican politicians are happy where they are, they get all the perks that come with the office, and all they have to do is bitch and complain and not take any real responsibility for anything....why ruin a good thing?
Maybe MB thinks Dole, McCain and Romney are those conservatives driving moderates like him away from the Party.
Actually, I think that MB is a Libertarian and wants them to control the Party instead of the moderates and kick all conservatives out, which has almost been the case.