Political opposites saving time for beer (5)
I believe the answer is:
lager
'beer' is the definition.
(lager is a kind of beer)
'political opposites saving time' is the wordplay.
'political opposites' becomes 'lr' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'saving' indicates putting letters inside.
'time' becomes 'age' (an age is a period of time).
'lr' enclosing 'age' is 'LAGER'.
'for' is the link.
Can you help me to learn more?
(Other definitions for lager that I've seen before include "Drink - 5 down (anag)" , "Bottom-fermented beer" , "The drink could be regal" , "Lout's drink?" , "A brew" .)