Requirement to hold a hearing
New Zealand
Answer
Yes
Source
NewZealand Electoral Act 1993 (2010), Part 8 –Election petitions, p. 348
236 Trial ofpetition
(1) An electionpetition to which section 229(3) applies shall be tried in open court without ajury, and notice of the time and place of trial shall be given not less than 14days before the day of trial.
http://aceproject.org/ero-en/regions/pacific/NZ/new-zealand-electoral-act-2010/view
