Assembly Constitutional Amendment 89 amending section 2 of article XVIII of constitution. Present section unchanged except in following particulars: provides that delegates to constitutional conventions shall be nominated at non-partisan primary election as prescribed by legislature, those receiving majority vote thereat being elected, otherwise two highest candidates (or more if tied) being only candidates at further election; authorizes legislature to submit for adoption by electors other plans for selecting delegates: provides that convention shall meet within nine months after election, and may submit new constitution or amendments or revisions of that existing, as alternative propositions or otherwise