Decorated Georgia Republican has caught on (9)

I believe the answer is:

garlanded

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'decorated' is the definition.
(garlanding is a kind of decorating)

'georgia republican has caught on' is the wordplay.
'georgia' becomes 'GA' (abbreviation for the US state).
'republican' becomes 'R' (abbreviation in US politics).
'has caught' becomes 'landed' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'on' is a charade indicator (letters next to each other).
'ga'+'r'+'landed'='GARLANDED'

Can you help me to learn more?

(Other definitions for garlanded that I've seen before include "Honoured" , "swathed in leaves" , "adorned with flowers" , "bays (around head)" , "beset by flowers?" .)

I've seen this clue in The Daily Express.

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