AN ECONOMIC EXPLANATION OF THE NATIONALIZATION OF ELECTORAL POLITICS
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24<br />
i<br />
In Morgenstern et al.'s terms (2009), this is the static or distributional dimension of nationalization.<br />
ii<br />
Similarly, from 2000 to 2007 the unemployment rate in Ireland remained fairly stable at around 4.5%,<br />
and then increased to 5.7% in 2008. In 2009, it more than doubled to 12%. The rate continued to increase<br />
over the next three years to stand at 14.7% in 2012.<br />
iii<br />
Golosov (2014) argues that more economically-developed countries should have more nationalized<br />
party systems. However, the empirical evidence does not support the hypothesis. Contrary to Golosov, we<br />
do not focus on cross-national differences in nationalization, but on changes from one election to the next.<br />
iv<br />
For Jones and Mainwaring (2003: 160), large parties are those that win over 30 percent of the vote.<br />
v<br />
Nationalization has been employed as a measure of party institutionalization (Lupu, 2015).<br />
vi<br />
For Morgenstern et al (2009: 1329), however, democratic or party age should not affect nationalization,<br />
as some new parties gain widespread support and some older parties consolidate their support bases in<br />
limited geographical regions.<br />
vii<br />
The results of our regression analysis do not change appreciably if only democratic elections are<br />
included in the sample (a country is deemed to be democratic when it obtains a score of at least 6 in the<br />
Polity IV database). Results are available upon request.<br />
viii<br />
The Party Nationalization Score (PNS) was created by Jones and Mainwaring (2003). Its formula is<br />
the following:<br />
PNS =1 − Gini coefficient<br />
The Gini coefficient ranges from 0 in cases of perfect equality across all units to 1 in cases of perfect<br />
inequality. A Gini coefficient of 0 signifies that a party received the same share of the vote in every subnational<br />
unit; a Gini coefficient of 1 means that it received 100 percent of its vote in one sub-national unit<br />
and 0 percent in all the rest. The Gini coefficient is inverted and subtracted from 1, so that high scores<br />
indicate high levels of nationalization.<br />
ix<br />
The formula establishes the party nationalization score with weighted units (PNS w) for a country with d<br />
weighted units [1; …; I; …; d], ordered according to the increasing vote share of party p. Each territorial<br />
unit i has v i voters, and p i of them vote for political party p.<br />
d<br />
pi<br />
∑ ( vi<br />
⋅ (<br />
j<br />
− ))<br />
1<br />
PNSw = 2 ⋅<br />
2<br />
d d<br />
v p<br />
∑<br />
i<br />
∑ p<br />
1<br />
i<br />
⋅∑<br />
1 1<br />
i<br />
x<br />
As the lagged value of the dependent variable is included in the model, the first election is lost. This<br />
explains why we have 475 elections in our sample but a maximum of 432 observations in the models.<br />
xi<br />
To implement this method, the bias correction is initialized with the Arellano and Bond estimator and<br />
the bias correction is up to order O(1/T). The analytical standard errors are not provided, but bootstrapped<br />
errors are.<br />
xii<br />
This model is not run using Kasuya and Moenius’ composite measure as there is not first-order serial<br />
correlation in this case.<br />
xiii<br />
When elections which are non-democratic are excluded, the results are virtually the same. For instance,<br />
the coefficient on the output gap in model 1A is -4.26 and the t-statistic is 2.46 (i.e. it is statistically<br />
significant at the 0.01 level) while in model 3 the coefficient is 0.086 and the t-statistic is 1.87 (i.e. also<br />
statistically significant at the 0.1 level).