1. we already had a vote on proportional representation: https://en.m.wikipedia.org/wiki/2011_United_Kingdom_Alternat...

2. everyone thinks proportional representation is excellent. the reason is usually a misunderstanding of the voting process. in reality it has drawbacks, same as first past the post. before the UK referendum a study was commissioned exploring the various types of voting. the conclusion was that all these systems have flaws and all these systems are similar. but the clarity and the definitive mandate a party gets from FPTP will make sure alternative voting will not be adopted anytime soon.