In order for a candidate's name to be proposed to go on to the primary ballot, it must be proposed by a prescribed number of qualified electors, within the district in which that candidate is to be elected, which names must be subscribed to a verified petition. This entitles the candidate's name to be printed upon the primary ballot. Within ten days before the primary, or return day, the clerk of the board or body which is delegated by law to prepare for election matters must print, prepare and send out, primary election ballots for each separate political party through the United States mails in the following manner: To each elector within the jurisdiction is mailed a plain unmarked envelope, addressed to the business or home address of each separate elector, containing a self-addressed and stamped return envelope, returnable to the Board of Election of that precinct, together with one party primary election ballot, for the use of that elector. If the elector happens to be a Republican the color of his ballot will be pink, and only the names of the Republican candidates will be printed thereon. On the outside end of the ballot is printed the elector's party voting number, which voting number is separate and distinct from every other voting number in that precinct. On the outside end of the return envelope is a line left for the original signature of the elector to whom the ballot is mailed, whereon he must either subscribe his signature in ink, or if he be an incapable voter, and is assisted, must have his own name subscribed thereon, together with the names of two freeholders in that precinct, who assisted him in voting. Upon receipt of the envelope containing his ballot, the voter marks a cross (X) at the names of the candidates for whom he votes, and then folds his ballot so that all the names thereon are turned inside and out of sight, and his party voting number appears on the outside end of the envelope. (In the same manner that he now folds his ballot at a general election.) He then encloses this ballot in the stamped return envelope, seals the same, signs his name on the end of the envelope, and deposits it in a postoffice box. It then goes to the postoffice directed by law, addressed to the Primary or Return Board, who alone are authorized by law to receive these envelopes from the postmaster, and then only on the day and hour designated by law and in public. Upon return day, the Board receives all of these primary election envelopes from the postoffice, takes them to a public place, and after counting the number received, and comparing with the number originally sent out, compares each signature on each envelope with the same signature subscribed on the original affidavit of registration, and if it be genuine, opening the envelope, removing the ballot therefrom, without opening the same, observing that the color of the ballot corresponds to the party color to which that elector belongs, then