Untruths about female politician in biography (4,5)
I believe the answer is:
life story
'biography' is the definition.
('life story' can be a synonym of 'biography')
'untruths about female politician' is the wordplay.
'untruths' becomes 'lies' (lie is a kind of untruth).
'about' indicates putting letters inside.
'female' becomes 'f' (abbreviation).
'politician' becomes 'tory' (I've seen this before).
'lies' placed around 'f' is 'lifes'.
'lifes'+'tory'='LIFE STORY'
'in' acts as a link.
(Other definitions for life story that I've seen before include "Biography" , "Autobiography" .)