Made great efforts to sway voters (6)
I believe the answer is:
strove
'made great efforts' is the definition.
(I've seen this before)
'sway voters' is the wordplay.
'voters' anagrams to 'STROVE'.
However, I am not sure how this is indicated.
'to' is the link.
Can you help me to learn more?
(Other definitions for strove that I've seen before include "Made great efforts" , "Tried hard for voters" , "Struggled" , "Voters (anag) - made every effort" , "Endeavoured" .)