Some characters in parliament I'm mocking over pledge (6)
I believe the answer is:
commit
'pledge' is the definition.
(I know that pledge is a more specific form of charge)
'some characters in parliament i'm mocking over' is the wordplay.
'some characters in' indicates the answer is hidden within the clue.
'over' says the letters should be written in reverse.
'timmoc' can be found hidden inside 'parliament im mocking'.
'timmoc' reversed gives 'COMMIT'.
(Other definitions for commit that I've seen before include "Entrust; carry out" , "Entrust; pledge (oneself)" , "Perpetrate, carry out (a crime)" , "Send to prison or pledge" , "Perform an illegal act" .)