Call from the US electorate? (2-5)
I believe the answer is:
no-trump
'call' is the definition.
(type of call in the card game bridge)
I can't explain the rest of the clue.
(Other definitions for no-trump that I've seen before include "Put morn (anag.); bridge call" , "Type of bid at bridge" , "Highest bid in bridge" , "Bid type that's top" , "Having no suit ranking above all others" .)