Labour needs a new election catchphrase? (6)

I believe the answer is:

slogan

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'catchphrase?' is the definition.
(eg a political catchphrase)

'labour needs a new' is the wordplay.
'labour' becomes 'slog' (labour can mean to work or slog).
'needs' is a charade indicator (letters next to each other).
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'slog'+'a'+'n'='SLOGAN'

'election' acts as a link.
This may not be correct. It may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for slogan that I've seen before include "War cry - advertising jingle" , "Battle cry - advertising phrase" , "Short catchy phrase used in advertising" , "Motto, catchy phrase" , "Advertising catchphrase" .)

I've seen this clue in The Guardian.

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