Difficult getting a couple of Poles a Parliamentary report (7)
I believe the answer is:
hansard
'parliamentary report' is the definition.
(I've seen this before)
'difficult getting a couple of poles a' is the wordplay.
'a couple of poles' can mean two replacements for 'pole'.
'difficult' becomes 'hard' (synonyms).
'getting' indicates putting letters inside.
'pole' becomes 'n' (abbreviation for North, as in North Pole).
'pole' becomes 's' (abbreviation for South, as in South Pole).
'n'+'s'+'a'='nsa'
'hard' placed around 'nsa' is 'HANSARD'.
(Other definitions for hansard that I've seen before include "Printed record of Westminster debates" , "Official record of parliamentary debates" , "House journal" , "Official report of Parliamentary proceedings" , "Verbatim report of UK parliamentary proceedings" .)