ELEC § 9042

If a measure submitted to the voters by the Legislature was not adopted unanimously, one Member of the Senate who voted against it shall be appointed by the President pro Tempore of the Senate and one Member of the Assembly who voted against it shall be appointed by the Speaker of the Assembly, at the same time as appointments to draft an argument in its favor are made, to write an argument against the measure. An argument shall not exceed 500 words.

If those members appointed to write an argument against the measure choose, each may write a separate argument opposing it, but the combined length of the two arguments shall not exceed 500 words.