40:20-13.Ā  Nonpartisan poll book;Ā  ballots numbered
There shall be provided for the use of the boards of registry and election an additional book, to be known as theĀ  "nonpartisan book" , and a record shallĀ  be kept therein of each voter who votes in the nonpartisan box, with the numberĀ  of the ballot cast by him, and in the different primary books there shall beĀ  kept a record of the voters voting in the primary boxes, with a record of theĀ  numbers of their ballots.

The numbers on the ballots shall be placed in the same place as the numbersĀ  on the primary ballots, and shall be torn off in the same manner as they areĀ  required to be torn from the primary ballots.
Ā