Vote against the final part accepting nothing without a break (12)

I believe the answer is:

conterminous

'without a break' is the definition.

'vote against the final part accepting nothing' is the wordplay.
'vote against' becomes 'con'.
'the final part' becomes 'terminus'.
'accepting' is an insertion indicator.
'nothing' becomes 'o' (looks like zero - 0).
'terminus' going around 'o' is 'terminous'.
'con'+'terminous'='CONTERMINOUS'

I've seen this clue in The Independent.

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