Campaign: Prince with nothing over Jeffrey Epstein primarily must go to court (7)
I believe the answer is:
project
'campaign prince with nothing' is the definition.
I can't judge whether this defines the answer.
'over jeffrey epstein primarily must go to court' is the wordplay.
'over' means one lot of letters go next to another.
'primarily' says to take the initial letters.
'must go' becomes 'pro' (I can't explain this - if you can you should believe this answer much more).
'to court' becomes 'ct' (abbreviation used in road names).
The first letters of 'jeffrey epstein' is 'je'.
'je' after 'pro' is 'proje'.
'proje'+'ct'='PROJECT'
Can you help me to learn more?
(Other definitions for project that I've seen before include "Stick out; lengthy task" , "Enterprise; stick out" , "Enterprise, undertaking" , "low-cost housing" , "Extend outwards" .)