More learned about splitting Conservative party up (8)
I believe the answer is:
cleverer
'more learned' is the definition.
'about splitting conservative party up' is the wordplay.
I cannot quite see how this works, but
'about' could be 're' (regarding) and 're' is found within the answer.
'conservative' could be 'c' (abbreviation commonly used in UK politics) and 'c' is found within the answer.
'party' could be 'l' and 'l' is found within the answer.
The remaining letters 'ever' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
(Other definitions for cleverer that I've seen before include "Mentally quicker" , "More intelligent" , "More mentally quick" .)