Title
Kingmakers and leaders in coalition formation.
Abstract
Assume that players strictly rank each other as coalition partners. We propose a procedure whereby they “fall back” on their preferences, yielding internally compatible, or coherent, majority coalition(s), which we call fallback coalitions. If there is more than one fallback coalition, the players common to them, or kingmakers, determine which fallback coalition will form. The first player(s) acceptable to all other members of a fallback coalition are the leader(s) of that coalition. The effects of different preference assumptions—particularly, different kinds of single-peakedness—on the number of coherent coalitions, their connectedness, and which players become kingmakers and leaders are investigated. The fallback procedure may be used (i) empirically to identify kingmakers and leaders or (ii) normatively to select them. We illustrate the model using data from the U.S. Supreme Court, 2005–2009.
Year
DOI
Venue
2013
10.1007/s00355-012-0680-4
Social Choice and Welfare
Keywords
Field
DocType
leader,leaders
Welfare economics,Economics,Social connectedness,Supreme court
Journal
Volume
Issue
ISSN
41
1
1432-217X
Citations 
PageRank 
References 
0
0.34
1
Authors
2
Name
Order
Citations
PageRank
Steven J. Brams116930.92
D. Marc Kilgour257170.61