Imperfect MP I elect, no change (10)
I believe the answer is:
incomplete
'imperfect' is the definition.
(thesaurus)
'mp i elect no change' is the wordplay.
'change' indicates anagramming the letters.
'mp'+'i'+'elect'+'no'='mpielectno'
'mpielectno' with letters rearranged gives 'INCOMPLETE'.
(Other definitions for incomplete that I've seen before include "Unfinished" , "not done" , "Not yet finished" , "Wanting" , "not sufficient" .)