Current senior MPs failing to make mark (10)
I believe the answer is:
impression
'mark' is the definition.
(I've seen this in another clue)
'current senior mps failing' is the wordplay.
'current' becomes 'I' (physics symbol).
'failing' indicates anagramming the letters (a failed spelling of the word).
'senior'+'mps'='seniormps'
'seniormps' anagrammed gives 'mpression'.
'i'+'mpression'='IMPRESSION'
'to make' is the link.
(Other definitions for impression that I've seen before include "opinion" , "Mark" , "Feeling; print" , "Imitation (of a person)" , "take-off" .)