Records from socialist on the radio (5)
I believe the answer is:
marks
'records' is the definition.
(marking is a kind of recording)
'socialist on the radio' is the wordplay.
'socialist' becomes 'Marx' (Karl Marx).
'on the radio' shows a homophone (sound like).
'marx' sounds like 'MARKS'.
'from' is the link.
(Other definitions for marks that I've seen before include "Stains" , "Symbols" , "Goals" , "Visible impressions" , "Grades assigned to school work" .)