US politician, comrade, somehow ahead of time (8)
I believe the answer is:
democrat
'us politician' is the definition.
(I've seen this before)
'comrade somehow ahead of time' is the wordplay.
'somehow' indicates anagramming the letters.
'ahead of time' becomes 't' (I've seen this in other clues).
'comrade' with letters rearranged gives 'democra'.
'democra'+'t'='DEMOCRAT'
(Other definitions for democrat that I've seen before include "One who believes in government by the whole people" , "US political party supporter" , "Ditto" , "American politician" , "Clinton or Obama supporter" .)