Politician, an intruder of racy, unrestricted behaviour (8)

I believe the answer is:

rampancy

'unrestricted behaviour' is the definition.

'politician an intruder of racy' is the wordplay.
'politician' becomes 'MP' (Member of Parliament).
'intruder of' indicates putting letters inside.
'mp'+'an'='mpan'
'mpan' going inside 'racy' is 'RAMPANCY'.

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

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