Who’ll make a good case new PM’s role should be this? (12)
I believe the answer is:
cabinetmaker
'who'll make a good case new pm's role should be this?' is the definition.
The definition suggests a singular noun which matches the answer.
'case new pm's role should be this?' is the wordplay.
I cannot really see how this works, but
'case' could be 'cabinet' (I've seen this before) and 'cabinet' is found in the answer.
'be' could be 'make' (making is a kind of being) and 'make' is found in the answer.
A single letter 'r' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for cabinetmaker that I've seen before include "one living in 14 [DOWNING STREET] ?" , "craftsman" , "Joiner" , "Woodworker" .)