Politician amid vote I cite when agitated is vying with others? (11)
I believe the answer is:
'vying with others?' is the definition.
(to vie with others is to compete with them)
'politician amid vote i cite when agitated' is the wordplay.
'politician' becomes 'MP' (Member of Parliament).
'amid' indicates putting letters inside.
'when agitated' indicates anagramming the letters (I've seen this in other clues).
'voteicite' with letters rearranged gives 'coetitive'.
'mp' going within 'coetitive' is 'COMPETITIVE'.
'is' is the link.
(Another definition for competitive that I've seen is " Combative, vying".)