Proportional representation is liberal

There is no reason to reject democracy since the purpose of democracy is to legitimise the state. If the state seeks to remain legitimate then it must accept democracy and if the state doesn't use a proportional system then it can be more legitimate by changing the voting system. We expect the state to seek to be legitimate and so then it is consistent for the state to use pr. The only reason to use fptp is if the state is in conflict with the interests of the people (which it should not be). First-past-the-post is bad for liberal voters and since the purpose of democracy is to give a voice to the liberal electorate then fptp is inconsistent. We want liberals to be heard and represented and so then we must only use proportional representation. If we do not use pr then liberals have been excluded from the state which is wrong and a contradiction because the state must be liberal.