Wisconsin politician is a spineless fellow (4)
I believe the answer is:
wimp
'a spineless fellow' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'wisconsin politician' is the wordplay.
'wisconsin' becomes 'WI' (abbreviation for Wisconsin).
'politician' becomes 'mp' (Member of Parliament).
'wi'+'mp'='WIMP'
'is' is the link.
Can you help me to learn more?
(Other definitions for wimp that I've seen before include "one of the Tory wets?" , "Spineless man" , "Feeble or ineffectual person" , "Weak individual" , "Chicken" .)