All there in partisan election (4)
I believe the answer is:
sane
'all there' is the definition.
('not all there' can mean insane)
'in partisan election' is the wordplay.
'in' indicates a hidden word.
'SANE' can be found hidden inside 'partisan election'.
(Other definitions for sane that I've seen before include "In full possession of mental faculties" , "Not mad" , "Healthy in mind" , "Sound in mind" , "Rational" .)