Opposition to pr makes the right look stupid

Fptp means that the centre-left party is the natural party of government because the cr party is (anti-pr and therefore) inconsistent. It is inconsistent to be against pr and want freedom. Since the cr party is inconsistent people are unlikely to vote for them which means the cl party wins... even though it too is against pr. For the cl party to be against pr is not so illogical because pr leads to freedom. Since the cl party wins under fptp they have no incentive to change it and it will remain until the cr party wants to change but it never will. The cr party will never advocate pr and so fptp is stable.