Current Conservative crushed by vote in Barking gets the boot (8)
I believe the answer is:
eviction
'the boot' is the definition.
(thesaurus)
'current conservative crushed by vote in barking' is the wordplay.
'current' becomes 'I' (physics symbol).
'conservative' becomes 'C' (UK political abbreviation).
'crushed by' means one lot of letters goes inside another.
'barking' is an anagram indicator ('barking' can informally mean mad).
'i'+'c'='ic'
'vote'+'in'='votein'
'votein' with letters rearranged gives 'evtion'.
'ic' inserted into 'evtion' is 'EVICTION'.
'gets' acts as a link.
(Other definitions for eviction that I've seen before include "Lawful dispossession" , "Expulsion from a premises" , "Removal of tenant by law" , "Expulsion (from a property)" , "Ousting" .)