One word in three from a candidate (3)

I believe the answer is:

did

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'one word in three' is the definition.
I can't judge whether this definition defines the answer.

'from a candidate' is the wordplay.
'from' indicates the answer is hidden within the clue.
'DID' can be found hidden inside 'candidate'.

Can you help me to learn more?

(Other definitions for did that I've seen before include "Achieved; cheated" , "Acted" , "Accomplished" , "Swindled" , "Performed an action" .)

I've seen this clue in the Evening Standard.

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