Satisfy senate has no space (4)
I believe the answer is:
sate
'satisfy' is the definition.
(I've seen this before)
'senate has no space' is the wordplay.
'has no' is a deletion indicator.
'space' becomes 'en'.
'senate' with 'en' taken out is 'SATE'.
(Other definitions for sate that I've seen before include "Satisfy to excess" , "Quench" , "Fill to repletion" , "Indonesian food" , "spicy meat" .)