Oh! Nasty tartan politics, erupting now herein? (8,8,5)

I believe the answer is:

scottish national party

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'oh nasty tartan politics erupting now herein?' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'oh nasty tartan politics erupting' is the wordplay.
'erupting' indicates an anagram.
'oh'+'nasty'+'tartan'+'politics'='ohnastytartanpolitics'
'ohnastytartanpolitics' is an anagram of 'SCOTTISH NATIONAL PARTY'.

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(Another definition for scottish national party that I've seen is " separatists".)

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