Foretell proportional representation law (7)

I believe the answer is:

predict

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'foretell' is the definition.
(synonyms)

'proportional representation law' is the wordplay.
'proportional representation' becomes 'pr' (this could be a standard abbreviation which I don't know about).
'law' becomes 'edict' (I've seen this before).
'pr'+'edict'='PREDICT'

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(Other definitions for predict that I've seen before include "Estimate consequence of" , "Guess (the future)" , "Foretell, prophesy" , "Forecast" , "act as oracle" .)

I've seen this clue in The Telegraph.

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