Temporarily pause Parliament in favour of unprincipled character (8)
I believe the answer is:
prorogue
'temporarily pause parliament' is the definition.
I can't judge whether this definition defines the answer.
'in favour of unprincipled character' is the wordplay.
'in favour of' becomes 'pro' (being pro a particular cause).
'unprincipled character' becomes 'rogue' (I can't explain this - if you can you should give a lot more credence to this answer).
'pro'+'rogue'='PROROGUE'
Can you help me to learn more?
(Other definitions for prorogue that I've seen before include "Stop meeting" , "Discontinue meeting" , "Suspend, postpone" , "Suspend meeting" , "Discontinue (a session of parliament)" .)