One learning about politician in press (7)
I believe the answer is:
implore
'press' is the definition.
(I've seen this before)
'one learning about politician' is the wordplay.
'one' becomes 'i' (Roman numeral).
'learning' becomes 'lore' (I've seen this before).
'about' is a charade indicator (letters next to each other).
'politician' becomes 'mp'.
'lore' put after 'mp' is 'mplore'.
'i'+'mplore'='IMPLORE'
'in' acts as a link.
(Other definitions for implore that I've seen before include "More lip (anag)" , "Beg earnestly, plead" , "Ask earnestly" , "Beg desperately" , "Beg earnestly, beseech" .)