Go for each Conservative introducing right for cheap rent? (10)
I believe the answer is:
peppercorn
'cheap rent?' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'go for each conservative introducing right' is the wordplay.
'go for each' becomes 'pepper' (I can't explain this - if you can you should give a lot more credence to this answer).
'conservative' becomes 'con' (abbreviation for Conservative).
'introducing' means one lot of letters goes inside another (some letters introduced or inserted into others).
'right' becomes 'r' (common abbreviation).
'con' going around 'r' is 'corn'.
'pepper'+'corn'='PEPPERCORN'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for peppercorn that I've seen before include "Dried spice berry - symbol of token payment" , "source of condiment" , "Nominal" , "(Of rent) notional" , ">something spicy" .)