Reform voters are for values without moderation (9)
I believe the answer is:
overrates
'values without moderation' is the definition.
The answer and definition can be both related to thinking as well as being verbs in their -s form.
Perhaps they are linked in a way I don't understand?
'reform voters are' is the wordplay.
'reform' indicates an anagram (letters in a new form).
'voters'+'are'='votersare'
'votersare' with letters rearranged gives 'OVERRATES'.
'for' is the link.
Can you help me to learn more?
(Other definitions for overrates that I've seen before include "Makes too high an estimate" , "Values too highly" .)