Impressive counting of the votes (7)

I believe the answer is:

telling

This clue is a double definition.

'impressive' is the first definition.
(I know that impressive can be written as telling)

'counting of the votes' is the second definition.
(as in an election)

(Other definitions for telling that I've seen before include "Providing information" , "Counting" , "influential" , "Revealing, significant" , "briefing" .)

I've seen this clue in The Times.

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