Joseph Parker fighting for career relevance in must-win bout with Hughie Fury

September 23 isn't just an important date for New Zealand politics, it's also shaping as a pivotal day in the career of Joseph Parker.

Just hours after the polls close, the Kiwi will defend his world heavyweight title in Manchester, England.

He cast his vote in the UK on Wednesday (NZT) so he can concentrate on a fight that'll either enhance his heavyweight power or relegate him to boxing's backbenches. 

Watch the video above for the full story.