Biased Socialist left before Democrat (7)
I believe the answer is:
slanted
'biased' is the definition.
(I know that biased can be written as slanted)
'socialist left before democrat' is the wordplay.
'socialist left' becomes 'sl' (this might be a standard abbreviation of which I'm unaware).
'before' becomes 'ante' (prefix meaning before).
'democrat' becomes 'd'.
'sl'+'ante'+'d'='SLANTED'
Can you help me to learn more?
(Other definitions for slanted that I've seen before include "Sloped; leaning" , "Sloping, leaning" , "At an angle" , "Sloped, one-sided" , "Partisan" .)