Vote stacking

Electoral fraud, election manipulation, or vote rigging is illegal interference with the process of an election. Acts of fraud affect vote counts to bring about an election result, whether by increasing the vote share of the favored candidate, depressing the vote share of the rival candidates, or both. What constitutes electoral fraud under law varies from country to country.

Many kinds of election fraud are outlawed in electoral legislation, but others are in violation of general laws, such as those banning assault, harassment or libel. Although technically the term 'electoral fraud' covers only those acts which are illegal, the term is sometimes used to describe acts which are legal but considered morally unacceptable, outside the spirit of electoral laws, or in violation of the principles of democracy.Show elections, in which only one candidate can win, are sometimes classified as electoral fraud, although they may comply with the law.

In national elections, successful electoral fraud can have the effect of a coup d'état or corruption of democracy. In a narrow election, a small amount of fraud may be enough to change the result. Even if the outcome is not affected, revelation of fraud can have a damaging effect, if not punished, as it can reduce voters' confidence in democracy.

A list of threats to voting systems, or electoral fraud methods considered as sabotage, is kept by the National Institute of Standards and Technology. and is considered sabotage of the highest degree.

Electoral fraud can occur in advance of voting if the composition of the electorate is altered. The legality of this type of manipulation varies across jurisdictions. Deliberate manipulation of election outcomes is widely considered a violation of the principles of democracy.

In many cases it is possible for authorities to artificially control the composition of an electorate in order to produce a foregone result. One way of doing this is to move a large number of voters into the electorate prior to an election, for example by temporarily assigning them land or lodging them in flophouses. Many countries prevent this with rules stipulating that a voter must have lived in an electoral district for a minimum period (for example, six months) in order to be eligible to vote there. However, such laws can also be used for demographic manipulation as they tend to disenfranchise those with no fixed address, such as the homeless, travelers, Roma, students (studying full-time away from home), and some casual workers.

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Wikipedia