Professional scoundrel could postpone parliament perhaps (8)

I believe the answer is:

prorogue

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'postpone parliament perhaps' is the definition.
I can't judge whether this definition defines the answer.

'professional scoundrel' is the wordplay.
'professional' becomes 'pro' (abbreviation).
'scoundrel' becomes 'rogue' (rogue is a kind of scoundrel).
'pro'+'rogue'='PROROGUE'

'could' acts as a link.

Can you help me to learn more?

(Other definitions for prorogue that I've seen before include "Suspend, postpone" , "Stop meeting" , "Discontinue (a session of parliament)" , "Suspend meeting" , "Discontinue meeting" .)

I've seen this clue in the Sydney Morning Herald.

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