Uncommon to see panic gripping Conservative (6)
I believe the answer is:
scarce
'uncommon' is the definition.
(I've seen this before)
'panic gripping conservative' is the wordplay.
'panic' becomes 'scare' (synonyms).
'gripping' means one lot of letters goes inside another.
'conservative' becomes 'c' (abbreviation commonly used in UK politics).
'scare' enclosing 'c' is 'SCARCE'.
'to see' is the link.
(Other definitions for scarce that I've seen before include "Insufficient to meet demand" , "Not enough to meet demand" , "Rarely found" , "Deficient in quantity" , "Common? Definitely not" .)