Accounts signed initially by politicians (7)
I believe the answer is:
stories
'accounts' is the definition.
(story is a kind of account)
'signed initially by politicians' is the wordplay.
'initially' indicates taking the first letters.
'by' is a charade indicator (letters next to each other).
'politicians' becomes 'tories' (informal term for the Conservative Party).
The initial letter of 'signed' is 's'.
's'+'tories'='STORIES'
(Other definitions for stories that I've seen before include "Accounts" , "Floors" , "House sections" , "Lies" , "Tales" .)