Stick a Democrat in this place (6)
I believe the answer is:
adhere
'stick' is the definition.
('adhere' can be a synonym of 'stick')
'a democrat in this place' is the wordplay.
'democrat' becomes 'd'.
'in this place' becomes 'here' ('here' can be a synonym of 'in this place').
'a'+'d'+'here'='ADHERE'
(Other definitions for adhere that I've seen before include "Stay attached" , "Stick to or remain faithful" , "Stick - join" , "Stick to - cement" , "Stick or cleave to" .)