Crossword Genius

What things can only get for Rishi's campaign official? (6)

Ross

I believe the answer is:

better

I'm a little stuck... Click here to teach me more about this clue!

'campaign official?' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?

'what things can only get for rishi's' is the wordplay.
I cannot quite understand how this works, but
'get' could be 'be' ('get' can mean 'come to be') and 'be' is found in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for better that I've seen before include "Gambler; cured" , "More satisfactory or partly recovered" , "Recovered from illness - more satisfactory" , "Comparatively good" , "Superior; gambler" .)

I've seen this clue in The Guardian.
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