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Party vibrancy can help parties reproduce themselves, but many long-lasting parties have exhausted former levels of vibrancy, and many new parties emerge and never form the intense connections that vibrancy entails. Yet while entrepreneurs forming parties under democracy may have the option to sidetrack developing party structures, new parties can and do build extensive grassroots networks. I suspect that many parties that Luna et al. code as fulfilling the core tasks of political parties would generate sufficient attachment from activists that Rosenblatt would code them as being vibrant, while most diminished subtype parties would not. Party History and Organization Ackerman focuses on the opportunities parties have to build connections with the public, and Van Dyck focuses on the incentives that parties have to do so. [Extracted from the article]

The association between how citizens perceive economic performance, insecurity, or corruption and how they evaluate the president varies systematically across Latin American countries and within them over time. In particular, while presidential popularity reflects these outcomes in the average Latin American country, survey data from 2006–17 confirm that the connection between government performance and presidential approval is generally stronger when unfragmented party systems or single-party majority governments make assessments of political responsibility easier. While these results suggest that the region's citizens do not blindly blame the president for outcomes where political responsibility should be shared, they also remind us that there are many countries in the region where fragmented party systems weaken the conditions for effective political accountability. [ABSTRACT FROM AUTHOR]

ABSTRACT Economically vulnerable voters are expected to hold politicians accountable for their management of the economy because these voters are more likely to be personally affected by economic shocks and less able to cope with the resulting dislocation. Evidence from the informal sector in Argentina, where the lack of formal registration increases income volatility and denies unemployment benefits, is consistent with this hypothesis. Data from Argentina from 2005 to 2006 show that the association between evaluations of the economy and evaluations of President Néstor Kirchner was stronger among those working without formal employment guarantees. The implication is that the electoral support of Latin America's many informal workers may very well be fickle and dependent on economic performance. [ABSTRACT FROM AUTHOR]

While political polarization may lead to gridlock and other negative policy outcomes, representation is likely to be enhanced when parties differentiate themselves from each other and make it easier for voters to see the connection between their personal ideologies and the electoral offerings. These differences between parties may be especially important in developing democracies, where voters are still learning parties' priorities and where parties do not always emphasize issues when campaigning. To test this proposition, I develop a measure of elite polarization in Latin America since the early 1990s based on legislative surveys. Individual-level voting patterns from mass survey data confirm that the connection between voters' self-placement on the left-right scale and their electoral choice is stronger in polarized party systems, even when controlling for other party system factors like the age of the party system or electoral fragmentation. This effect on voting behavior is not immediate, however, as voters take time to recognize the new cues being provided by the changing party system. [ABSTRACT FROM AUTHOR]

In districts where only one seat is contested, the electoral formula (plurality or majority) should be a major determinant of the number of parties that receive votes. Specifically, plurality rule should generate two-party competition while other institutional arrangements should generate electoral fragmentation. Yet tests of these propositions using district-level data have focused on a limited number of cases; they rarely contrast different electoral systems and have reached mixed conclusions. This study analyses district-level data from 6,745 single-member district election contests from 53 democratic countries to test the evidence for Duverger's Law and Hypothesis. Double-ballot majoritarian systems have large numbers of candidates, as predicted, but while the average outcome under plurality rule is generally consistent with two-party competition, it is not perfectly so. The two largest parties typically dominate the districts (generally receiving more than 90 per cent of the vote), and there is very little support for parties finishing fourth or worse. Yet third-place parties do not completely disappear, and ethnic divisions shape party fragmentation levels, even under plurality rule. Finally, institutional rules that generate multiparty systems elsewhere in the country increase electoral fragmentation in single-member plurality districts. [ABSTRACT FROM PUBLISHER]