Favour a candidate of overt stupidity! (4,3)

I believe the answer is:

vote for

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'favour' is the definition.
The answer and definition can be both to do with social activities as well as being verbs in their base form.
Perhaps there's a link between them I don't understand?

'a candidate of overt stupidity' is the wordplay.
'of overt' can be anagrammed to 'VOTE FOR'.
Though, I'm not clear how the anagram is indicated.

Can you help me to learn more?

(Another definition for vote for that I've seen is " Cast ballot in favour of".)

I've seen this clue in the Evening Standard.

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