Negative vote weight

Negative vote weight (also known as inverse success value) refers to an effect that occurs in certain elections where votes can have the opposite effect of what the voter intended. A vote for a party might result in the loss of seats in parliament, or the party might gain extra seats by not receiving votes.

A "Negative vote" is a voting system, which allows a voter to indicate dislike for a candidate without boosting another - in order to have one vote deducted from his/her least-preferred candidate's vote total.

The effect that a vote for a party might result in the loss of a seat is contrary to the requirement that every vote in a democratic election should have the same weight. It also violates the requirement that the vote may not explicitly run counter to the intention of the voter.

Germany

The phenomenon of negative vote weight occurred in several past federal elections in Germany, including the election in 2009.[1] The negative vote weight could occur in a state where a party had overhang seats. In such states, in many circumstances a vote for a party will not increase its national seat total (MMP allocations are calculated at the national level in Germany), but may increase the proportion of the party's national seats to be allocated to the state where it already had overhang seats (overhang seats being allocated at the state level). This effectively decreased the party's total seat count, and a voter would have been better served by not voting for that party.

However, the Federal Constitutional Court of Germany ruled on 3 July 2008 that this was unconstitutional, as a negative vote weight is incompatible with the constitutional guarantee of equality and directness. Accordingly, the election law was changed in February 2013.[2][3]

Other

Negative vote weight is possible in national elections in the Czech Republic and Romania. It can also occur in some of the Austrian states' local elections. In both cases, however, the incidence is lower, and the effect is less pronounced than in Germany.

Referendums

Negative vote weight can occur in popular referendums that have a vote quorum (where the proposed change is considered only if a minimum number of people vote). A vote against the proposal can cause the quorum to be satisfied and thus result in the acceptance of the proposal. For this reason, some popular referendums aim for an approving quorum where the proposed change is only considered if a minimum number of people vote for the proposal.

See also

References
  2. Bill amending the Federal Election Law. 11 December 2012. Retrieved 25 December 2012.
  3. ZEIT ONLINE GmbH, Hamburg, Germany (22 February 2013). "Bundestag: Deutschland hat ein neues Wahlrecht | ZEIT ONLINE". Zeit.de. Retrieved 20 September 2013.CS1 maint: multiple names: authors list (link)
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