Nonetheless, it amazes some constituents when they raise this artist (7)
I believe the answer is:
matisse
'this artist' is the definition.
(Henri Matisse, 1869-1954, French artist)
'nonetheless it amazes some constituents when they raise' is the wordplay.
'MATISSE' is hidden back-to-front in amongst the letters.
However, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for matisse that I've seen before include "Leading fauvist painter, d. 1954" , "Henri ---, Twentieth Century painter" , "20th century French painter" , "French impressionist" , "Mae sits badly for the French painter" .)