Electoral competition for the 2+1 electoral rule and the close alternatives
The Anglo-American double-member districts employing plurality-at-large are frequently criticized for giving a large majority premium to a winning party, since the large premium may decrease proportionality of the elected assembly relative to single-member districts. We demonstrate that the premium stems from a limited degree of voters' discrimination associated with only two positive votes on the ballot. To enhance voters' ability to discriminate, we consider alternative electoral rules that give voters more positive and negative votes. We identify strict voting equilibria of several alternative rules in a situation where candidates differ in binary ideology and binary quality, voters' ideology-types are binomially distributed, voters are strategic, and a candidate's policy is more salient than candidate's quality. The most generous rules such as approval voting and combined approval-disapproval voting only replicate the electoral outcomes of plurality-at-large. The best performance in a double-member district is achieved by a rule that assigns two positive votes and one negative vote to each voter (2+1 rule). Under a strict and sincere pure-strategy equilibrium of the 2+1 rule, the second largest group frequently wins the second seat and high-quality candidates gain seats more likely than low-quality candidates. The 2+1 rule increases the scope for a voter's discrimination while avoiding the underdog effects and overstating of preferences associated with an unrestricted number of negative votes.
|Date of creation:||Jun 2013|
|Date of revision:||Jun 2013|
|Contact details of provider:|| Postal: Opletalova 26, CZ-110 00 Prague|
Phone: +420 2 222112330
Fax: +420 2 22112304
Web page: http://ies.fsv.cuni.cz/
More information through EDIRC
When requesting a correction, please mention this item's handle: RePEc:fau:wpaper:wp2013_06. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Lenka Herrmannova)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.