Fantastic support arose for what Brexiters will now deny us (12)

I believe the answer is:

europassport

'what brexiters will now deny us' is the definition.
(reference to the UK exiting the EU)

'fantastic support arose' is the wordplay.
'fantastic' is an anagram indicator.
'support'+'arose'='supportarose'
'supportarose' is an anagram of 'EUROPASSPORT'.

'for' acts as a link.

I've seen this clue in The Guardian.

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