>>25611232
IMO yes. Political parties used to have different tiers of electors within their own ranks. Party political leaders used to only be elected from the 'selectorate' if you will of sitting MPs.
For your interest we have a somewhat related example in the last Scottish Conservative Prime Minister if you don't count David Cameron's ancestry.
Home inherited his peerage from his line and sat in the Lords. He was selected by the ruling Tory party to lead them after Macmillan and had to somehow leave the Lords (upper house) and enter the Commons (lower house). I'm not sure how he did it, I'm sure there are some British constitution geeks who could explain, but we did have a period of about 3 weeks in the 1960s where the British prime minister wasn't actually a member of parliament at all.
https://en.wikipedia.org/wiki/Alec_Douglas-Home#Prime_Minister_(1963%E2%80%931964)