Politician needing info about Religious Education (5)
I believe the answer is:
green
'politician' is the definition.
(eg member of the Green Party)
'info about religious education' is the wordplay.
'info' becomes 'gen' (gen is a kind of info**).
'about' indicates putting letters inside.
'religious education' becomes 're'.
'gen' placed around 're' is 'GREEN'.
'needing' is the link.
(Other definitions for green that I've seen before include "Verdant; naive" , "The colour of envy" , "Eg, avocado, emerald" , "Fresh - environmentally friendly - colour" , "Caring for environment" .)