Ideas from right-wingers taking in the man (8)
I believe the answer is:
theories
'ideas' is the definition.
(theory is a kind of idea)
'right-wingers taking in the man' is the wordplay.
'right-wingers' becomes 'tories' (Tory is an example).
'taking in' means one lot of letters goes inside another.
'the man' becomes 'he'.
'tories' going around 'he' is 'THEORIES'.
'from' is the link.
(Other definitions for theories that I've seen before include "General principles or possibilities" , "General principles or opinions" , "Explanatory suppositions" , "Conjectures" , "Abstract principles" .)