How a Conservative MP might describe self as romantic (7)
I believe the answer is:
amatory
'romantic' is the definition.
(synonyms)
'how a conservative' is the wordplay.
'how' becomes 'am' (I am not sure about this - if you are sure you should believe this answer much more).
'conservative' becomes 'tory' (informal term for a Conservative Party member).
'am'+'a'+'tory'='AMATORY'
'mp might describe self as' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for amatory that I've seen before include "relating to sexual desire?" , "declaration of love" , "Passionate" , "Loving" .)