Policy for those who are moderate or poor (6,4)
I believe the answer is:
golden mean
'policy for those who are moderate' is the definition.
'or poor' is the wordplay.
'or' becomes 'golden' ('or' is the heraldic name for 'gold').
'poor' becomes 'mean' ('mean' can be similar in meaning to 'poor').
'golden'+'mean'='GOLDEN MEAN'
(Other definitions for golden mean that I've seen before include "middle course" , "ideal proportions" , "Ideal position between two extremes" , "Perfect compromise" .)