Tear off, certain with voter out for wealth (8-5)
I believe the answer is:
treasure-trove
'wealth' is the definition.
(treasure trove is a kind of wealth)
'tear off certain with voter out' is the wordplay.
'off' is an anagram indicator.
'certain' becomes 'sure' ('sure' can be a synonym of 'certain'**).
'with' means one lot of letters goes inside another.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'voter' is an anagram of 'etrov'.
'sure' going around 'etrov' is 'suretrove'.
'tear' anagrammed gives 'trea'.
'trea'+'suretrove'='TREASURE-TROVE'
'for' acts as a link.
(Other definitions for treasure-trove that I've seen before include "lots of good things" , "Hidden store of valuables" , "Collection of delightful things" , "Valuables found hidden" .)