No source for Maxim magazine conclusively framing popular candidate (7)
I believe the answer is:
nominee
'candidate' is the definition.
(I know that candidate can be written as nominee)
'no source for maxim magazine conclusively framing popular' is the wordplay.
'source for' says to take the initial letters (I've seen 'sources for' mean this (the first letters or sources of the words)).
'magazine conclusively' becomes 'ee' (I am not sure about this - if you are sure you should believe this answer much more).
'framing' indicates putting letters inside (inserted letters are framed by the outside letters).
'popular' becomes 'in' (something that's 'in' is fashionable).
The initial letter of 'maxim' is 'm'.
'm'+'ee'='mee'
'mee' placed around 'in' is 'minee'.
'no'+'minee'='NOMINEE'
Can you help me to learn more?
(Other definitions for nominee that I've seen before include "someone to act for them" , "Candidate - appointed person" , "Person put forward" , "One suggested (for post)" , "One whose name is put forward" .)