Pitt say wrong about Republican (4)

I believe the answer is:

brad

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'pitt' is the definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?

'wrong about republican' is the wordplay.
'wrong' becomes 'bad' ().
'about' means one lot of letters goes inside another.
'republican' becomes 'r' (abbreviation).
'bad' placed around 'r' is 'BRAD'.

'say' acts as a link.

Can you help me to learn more?

(Other definitions for brad that I've seen before include "Fixer" , "One may secure" , "Small tapering nail" , "-- Pitt, US actor" , "Type of nail" .)

I've seen this clue in The Sun.

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