Lose power after leader moves to the right again (4)

I believe the answer is:

anew

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'again' is the definition.
(synonyms)

I cannot understand how the rest of the clue works.

(Other definitions for anew that I've seen before include "Once more (poetic)" , "From the beginning again" , "Afresh" , "Again but differently" , "Wane in a different way, again" .)

I've seen this clue in The Independent.

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