- Title Pages
- <b>Preface</b>
- <b>List of Figures</b>
- <b>List of Tables</b>
- <b>List of Symbols</b>
- 1 <b>How Electoral Systems Matter</b>
- 2 <b>The Origins and Components of Electoral Systems</b>
- 3 Electoral Systems—Simple and Complex
- 4 <b>The Number and Balance of Parties</b>
- 5 <b>Deviation from Proportional Representation and Proportionality Profiles</b>
- 6 <b>Openness to Small Parties: The Micro‐Mega Rule and the Seat Product</b>
- Part II <b>The Duvergerian Macro‐Agenda: How Simple Electoral Systems Affect Party Sizes and Politics</b>
- 7 <b>The Duvergerian Agenda</b>
- 8 <b>The Number of Seat‐Winning Parties and the Largest Seat Share</b>
- 9 <b>Seat Shares of All Parties and the Effective Number of Parties</b>
- 10 <b>The Mean Duration of Cabinets</b>
- 11 <b>How to Simplify Complex Electoral Systems</b>
- 12 <b>Size and Politics</b>
- 13 <b>The Law of Minority Attrition</b>
- 14 <b>The Institutional Impact on Votes and Deviation from PR</b>
- Part III <b>Implications and Broader Agenda</b>
- 15 <b>Thresholds of Representation and the Number of Pertinent Electoral Parties</b>
- 16 <b>Seat Allocation in Federal Second Chambers and the Assemblies of the European Union</b>
- 17 <b>What Can We Expect from Electoral Laws?</b>
- APPENDIX <b>Detecting Factors Other than the Seat Product</b>
- <b>References</b>
- <b>Index</b>
Thresholds of Representation and the Number of Pertinent Electoral Parties
Thresholds of Representation and the Number of Pertinent Electoral Parties
- Chapter:
- (p.241) 15 Thresholds of Representation and the Number of Pertinent Electoral Parties
- Source:
- Predicting Party Sizes
- Author(s):
Rein Taagepera (Contributor Webpage)
- Publisher:
- Oxford University Press
The nationwide threshold of minimal representation is the average vote share needed to win one seat in the assembly. It is close to 38% divided by the square root of the seat product (assembly size times district magnitude). If greater inclusion of political minorities is desired, this threshold can be lowered by increasing district magnitude and/or assembly size. The number of serious or pertinent parties might be close to square root plus fourth root of district magnitude, plus one.
Keywords: seat product, assembly size, district magnitude, inclusion of political minorities, pertinent parties
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- Title Pages
- <b>Preface</b>
- <b>List of Figures</b>
- <b>List of Tables</b>
- <b>List of Symbols</b>
- 1 <b>How Electoral Systems Matter</b>
- 2 <b>The Origins and Components of Electoral Systems</b>
- 3 Electoral Systems—Simple and Complex
- 4 <b>The Number and Balance of Parties</b>
- 5 <b>Deviation from Proportional Representation and Proportionality Profiles</b>
- 6 <b>Openness to Small Parties: The Micro‐Mega Rule and the Seat Product</b>
- Part II <b>The Duvergerian Macro‐Agenda: How Simple Electoral Systems Affect Party Sizes and Politics</b>
- 7 <b>The Duvergerian Agenda</b>
- 8 <b>The Number of Seat‐Winning Parties and the Largest Seat Share</b>
- 9 <b>Seat Shares of All Parties and the Effective Number of Parties</b>
- 10 <b>The Mean Duration of Cabinets</b>
- 11 <b>How to Simplify Complex Electoral Systems</b>
- 12 <b>Size and Politics</b>
- 13 <b>The Law of Minority Attrition</b>
- 14 <b>The Institutional Impact on Votes and Deviation from PR</b>
- Part III <b>Implications and Broader Agenda</b>
- 15 <b>Thresholds of Representation and the Number of Pertinent Electoral Parties</b>
- 16 <b>Seat Allocation in Federal Second Chambers and the Assemblies of the European Union</b>
- 17 <b>What Can We Expect from Electoral Laws?</b>
- APPENDIX <b>Detecting Factors Other than the Seat Product</b>
- <b>References</b>
- <b>Index</b>