Secret vote

The secret ballot is a voting method in which a voter's choices in an election or a referendum is anonymous, forestalling attempts to influence the voter by intimidation, blackmailing, and potential vote buying. The system is one means of achieving the goal of political privacy.

Secret ballots are used in conjunction with various voting systems. The most basic form of secret ballot utilizes blank pieces of paper, upon which each voter writes his or her choice. Without revealing the votes to anyone, the voter would fold the ballot paper and place it in a sealed box, which is emptied later for counting. An aspect of secret voting is the provision of a voting booth to enable the voter to write on the ballot paper without others being able to see what is being written. Today, printed ballot papers are usually provided, with the names of the candidates or questions and respective check boxes. Provisions are made at the polling place for the voters to record their preferences in secret, and the ballots are designed to eliminate bias and to prevent anyone from linking voter to ballot.

A problem of privacy arises with moves to improve efficiency of voting by the introduction of postal voting and electronic voting. Some countries permit proxy voting, which some argue is inconsistent with voting privacy.

In ancient Greece, secret ballots were used in several situations, like ostracism, and also to remain hidden from people seeking favors.

In ancient Rome, the laws regulating elections were collectively known as Tabellariae Leges, the first of which was introduced in 139 BC (Lex Gabinia tabellaria).

Today, the practice of casting secret ballots is so commonplace that most voters would not consider that any other method might be used. Other methods which had been used and which are still used in some places and contexts include "oral votes" as well as Open ballot systems involving the public display of votes or roll calls. Other public voting methods include raising a hand to indicate a vote, or the use of coloured marbles or cards to indicate a voting choice.

...
Wikipedia