Crossword Genius

Labour's got a new catchphrase (6)

Ross

I believe the answer is:

slogan

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

'labour's got a new' is the wordplay.
'labour's got' becomes 'slog' (I can't justify this - if you can you should believe this answer much more).
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'slog'+'a'+'n'='SLOGAN'

Can you help me to learn more?

(Other definitions for slogan that I've seen before include "advertising catch phrase" , "Rallying cry" , "Memorable advertising phrase" , "Short catchy phrase used in advertising" , "Logo" .)

I've seen this clue in The Independent.
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