Say Biden cut cord with mate (8)
I believe the answer is:
democrat
'say biden' is the definition.
The definition suggests a singular noun which matches the answer.
'cut cord with mate' is the wordplay.
'cut' indicates anagramming the letters.
'with' is a charade indicator (letters next to each other).
'cord'+'mate'='cordmate'
'cordmate' with letters rearranged gives 'DEMOCRAT'.
Can you help me to learn more?
(Other definitions for democrat that I've seen before include "One advocates government by the people's elected representatives" , "Republican's US rival" , "Political type" , "Clinton or Obama supporter" , "One who believes in government by the whole people" .)