Get rid of pundit chewing sandwiches (5)
I believe the answer is:
ditch
'get rid' is the definition.
(I've seen this before)
'of pundit chewing sandwiches' is the wordplay.
'of' indicates a hidden word.
'DITCH' is hidden within 'pundit chewing sandwiches'.
(Other definitions for ditch that I've seen before include "Moat" , "Furrow, trench" , "Gully or furrow" , "Dyke" , "Forsake" .)