PR would be even worse for them and the country. They would get less MPs than Reform. Imagine those lunatics in parliament.
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Lib Dems are the reason why we're in this mess. They sold their soul for a chance of a PR referendum which they lost anyway.
They propped up David Cameron who shafted them royally, inflicted austerity, decimated public services, killed the Lib Dem manifesto pledge for no tuition fees therefore destroying their student base, and used a EU referendum EU as a bargaining chip to get an outright majority and kick them to the kerb.
So yeah those Tories in yellow jackets are the reason for austerity and Brexit.