Beastly campaigner ridiculously maniacal, it impresses one during election (9,6)
I believe the answer is:
political animal
'beastly campaigner' is the definition.
'ridiculously maniacal it impresses one during election' is the wordplay.
'ridiculously' is an anagram indicator (I've seen this in other clues).
'impresses one during' is an insertion indicator.
'election' becomes 'polil' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'maniacal'+'it'='maniacalit'
'maniacalit' is an anagram of 'ticalanima'.
'ticalanima' put into 'polil' is 'POLITICAL ANIMAL'.
Can you help me to learn more?
I've seen this clue in The Telegraph.
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