Born Conservative admits evidence of male entitlement, writing about life (7,7)
I believe the answer is:
natural history
'writing about life' is the definition.
(writing about the history of natural life)
'born conservative admits evidence of male entitlement' is the wordplay.
'born' becomes 'natural' ('natural' can be similar in meaning to 'born'**).
'conservative' becomes 'tory' (informal term for a Conservative Party member).
'admits' is an insertion indicator.
'evidence of male entitlement' becomes 'his' ('his' the masculine possessive pronoun).
'natural'+'tory'='naturaltory'
'naturaltory' placed around 'his' is 'NATURAL HISTORY'.
(Other definitions for natural history that I've seen before include "Gilbert White's study" , "Science" , "Studying animals perhaps" , "Study of animals and plants" , "Study of animals/plants" .)