Who checks the signatures?

New Zealand

Answer

Clerk of the House of Representatives

Source

Citizens Initiated Referenda Act 1993

( Enacted on 28 September 1993)

http://www.legislation.govt.nz/act/public/1993/0101/latest/DLM317193.html?search=ts_act%40bill%40regulation%40deemedreg_citizens_resel_25_h&p=1

Article19, Procedure in relation to certification

(1)For the purpose ofascertaining whether an indicative referendum petition has, after the date onwhich the promoter received the written notice required by section 13(1)(a), been signed by not less than10% of the eligible electors, the Clerk of the House of Representatives shall,with the assistance of the Government Statistician,—

(a)calculate the number of signatures that must bechecked for the purpose of providing a sample that can, with confidence, beregarded as providing an accurate estimate of the result that would be obtainedif all of the signatures were checked.