Politician with one party displaying particular urge (6)
I believe the answer is:
libido
'urge' is the definition.
(I've seen this before)
'politician with one party displaying particular' is the wordplay.
I cannot quite see how this works, but
'politician' could be 'lib' and 'lib' is present in the answer.
'one' could be 'i' (Roman numeral) and 'i' is located in the answer.
'party' could be 'do' (do can informally mean a party) and 'do' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for libido that I've seen before include "I'd boil over with sexual energy" , "lust!" , "Vital urge" , "Freud's sex drive" , "Strong urge" .)