Party novelty and congruence: a new approach to measuring party change and volatility

Sikk, A. and Köker, P. (2017) Party novelty and congruence: a new approach to measuring party change and volatility. Party Politics. ISSN 1354-0688.

Sikk and Köker PPol_FINAL_ACCEPTED.pdf - Accepted Version

Download (1MB) | Preview


We propose a new three-dimensional approach to party newness and an interval index of party congruence/novelty. Building on that, we also propose a split-vote-by-congruence (SBC) approach to electoral volatility that employs the index. Four elections from different countries that exhibited different forms of party change are used to illustrate the approach. The congruence/novelty index corresponds to our qualitative case knowledge and the SBC approach leads to meaningful volatility scores. Ad hoc coding of parties as new/old or singular successors/predecessors can seriously over- or underestimate volatility that explains divergence among volatility scores in literature. By eliminating the need for dichotomous and often controversial coding decisions, the SBC approach allows for a substantially more reliable calculation of volatility.

Item Type: Article
Uncontrolled Keywords: Electoral coalitions; new parties; party change; splits and mergers; volatility
Subjects: J Political Science > JA Political science (General)
J Political Science > JF Political institutions (General)
J Political Science > JL Political institutions (America except United States)
Divisions: Faculty of Social and Applied Sciences > School of Psychology, Politics and Sociology
Related URLs:
Depositing User: Dr Philipp Köker
Date Deposited: 24 Nov 2017 11:26
Last Modified: 27 Jan 2018 07:19

Actions (login required)

Update Item (CReaTE staff only) Update Item (CReaTE staff only)


Downloads per month over past year

View more statistics


Connect with us

Last edited: 29/06/2016 12:23:00