Republican in sore need struggling back again (2-7)

I believe the answer is:

re-endorse

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'back again' is the definition.
I know nothing about this answer so I can't tell whether this works.

'republican in sore need struggling' is the wordplay.
'republican' becomes 'R' (political abbreviation).
'in' indicates putting letters inside.
'struggling' indicates anagramming the letters (the letters struggle or wriggle into a new form).
'sore'+'need'='soreneed'
'soreneed' anagrammed gives 'reendose'.
'r' put within 'reendose' is 'RE-ENDORSE'.

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I've seen this clue in The Independent.

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