Leader, perhaps, associated with Nelson (6)

I believe the answer is:

column

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'leader perhaps' is the definition.
(I know that editorial is a type of column)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for column that I've seen before include "Nelson's supporter?" , "Newspaper article giving an opinion" , "Pillar - newspaper slot" , "stack" , "Supporting pillar" .)

I've seen this clue in the Evening Standard.

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