As someone who lives in a country where sectarian voting is endemic, elections here are religious head counts NO MORE, Let me just say you REALLY REALLY don't want to go down that route.
Taking no sides, but sectarian head count politics and "us 'uns" against "them 'uns" is even more boring than Brexit.
Sadly, Britain has two established parties who have managed to piss off their traditional voter bases and on one side the Tories have Reform/Restore moving more right wing, and on the other Labour have the ever present LD's plus now the Greens/Your Party moving more left wing.
Elections are won (and lost) in the middle. There is no middle party.
I'll save you the disappointment though, whatever party you support/plan to vote for………They are ALL, incompetent, self interested ******s. Every single one of them.
Can you tell I don't vote, and haven't for decades!?