Party systes: supply side Flashcards
Aside from cleavages, what can also influence a party system?
- Electoral system
- how parties compete
How should we understand party systems?
- Electoral systems (Duverger)
- Counting parties (Disproportionality (Gallagher Index)
* Quantitatively
* Qualitatively - The nature of party competition
Duverger Argument
FPTP leads to two party and proportional systems to multi party.
Not only instutional, but psychological
(voting for a tird party is useless
Proportionality
translation from votes to seats
–> Gallagher Index to measure Disproportionality
Uses a formula to calculate the differences between percentage of votes + number of seats
Single Member plurarilty (first past the post) –> most disproportional
Proportional –> the least disproportional
Sliding scale.
2 different kinds of electoral systems
- Single Member constituencies :
FPTP
2-round systems - Mixed systems:
proportional systems, closed + open lists
FPTP
- Single representative for a single constituency (kiesdistrict)
- Candidate that wins most votes in constituency is winner
Consequences of FPTP proportinality
- Highly disproportional –> because votes for parteis translate into amount of seats in constituency
- When there are less issues, the level of disproportionality is lower
- There tends to be an underrepresentation of low geographically concentrated parties: bias results
- With fragmentation + rise of new parties the voting system functions as high threshold.
Proportional open list
- High proportionality
- High number of political parties
- very open party system
- very open to changes in voters
- fragmentation
- difficult government formation
Proportional with majoritarian results/ closed
- Ratio of voters to seats is low (not a lot of seats for amount of people)
- to prevent fragmentation
- Smaller parties nationally less successful
- Regionally concentrated parties do better
What do electoral systems do?
Translate votes into seats.
Important implications for which parties get into parliament, and how cleavages are represented
Two ways of counting parties
- Quantiative
- Qualitative
Quantitative approach
Give each party a weighted score according to their electoral results.
How relevant these parties are according to their electoral results.
This can be used to assess party fragmentation, see changes in number of effective parties.
Party competition as way of counting
Need to look at how relevant a party is
When is a party relevant?
- Coalition potential: come into a coalition
- Black-mail potential: prevent a coalition
What is important for party competition according to Sartori//
- the number of parties
- the nature of competition (centrifugal/ centripetal)
- the degree of polarisation