The laws that have been enumerated are probably all that were enacted, at least all of which any notice is preserved. Laws to repress bribery were made while the voting was open; and they continued to be made after the vote by ballot was introduced at the popular elections by the Lex Gabinia (139 BC). Rein observes that "by this change the control over the voters was scarcely any longer possible; and those who were bribed could not be distinguished from those who were not." One argument in favour of ballot in modern times has been that it would prevent bribery; and probably it would diminish the practice, though not put an end to it. But the notion of Rein that the bare fact of the vote being secret would increase the difficulty of distinguishing the bribed from the unbribed is absurd; for the bare knowledge of a man's vote is no part of the evidence of bribery. It is worth remark that there is no indication of any penalty being attached to the receiving of a bribe for a vote. The utmost that can be proved is, that the divisores or one of the class of persons who assisted in bribery were punished. But this is quite consistent with the rest: the briber and his agents were punished, not the bribed. When, therefore, Rein, who refers to these two passages under the "lex Tullia", says: "Even those who received money from the candidates, or at least those who distributed it in their names, were punished," he couples two things together that are entirely of a different kind. The proposed Lex Aufidia went so far as to declare that if a candidate promised money to a tribe and did not pay it, he should be unpunished; but if he did pay the money, he should further pay to each tribe (annually?) 3000 sesterces as long as he lived. This absurd proposal was not carried; but it shows clearly enough that the principle was to punish the briber only.