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Otto Kirchheimer's well-known diagnosis of 'catch-all' partism in Western Europe rests on an implicit causal argument about the consequences of social change for political parties. This article takes up the causal story underlying Kirchheimer's account and traces its implications for a specific, though central, party activity: campaigning. As Kirchheimer discerned, the transformation of advanced industrial societies radically altered the context of parties' strategic decision-making. In the area of election campaigning, parties confronted heightened incentives to approach the electorate with 'persuasive' rather than more traditional 'mobilizing' appeals and developed a greatly increased demand for reliable information about voter preferences. These shifts, in turn, had consequences for party organization, promoting the centralization and marginalization of individual members Kirchheimer associates with the catch-all party type. Through the lens of campaign change, then, we can observe the causal processes that unite the diverse features Kirchheimer links to his catch-all party — although our attention is also drawn to ways in which party development has not conformed to Kirchheimer's expectations. This article illustrates these intersecting processes with a discussion of Labour and Conservative campaigns in Britain.

Scholars of the developing world have driven a surge of interest in unwritten or informal institutions as determinants of political outcomes. In advanced industrial democracies, by contrast, informal institutions often remain consigned to the analytic margins. This article makes a case for greater attention to informal political institutions in established democracies, and it introduces a theoretical framework to support such analysis. Informal institutions, understood as the unwritten rules of political life, are seen to perform three functions: they complete or fill gaps in formal institutions, coordinate the operation of overlapping (and perhaps clashing) institutions, and operate parallel to formal institutions in regulating political behavior. These three roles of informal institutions are associated with different characteristic patterns of institutional stability and change. The article illustrates its theoretical framework with case studies from American politics, the subfield in which formal-institutional analysis has flourished most. These cases are the historical norm of a two-term presidency (a completing institution), the unwritten rules of the presidential nomination process (coordinating institutions), the informal practice of obstruction in the Senate (a parallel institution), and the normative expectation that presidents should address the public directly (which performs all three functions).

Psychological research has found that being asked to predict one's future actions can bring about subsequent behavior consistent with the prediction but different from what would have occurred had no prediction been made. In a 1987 study, Greenwald, Carnot, Beach, and Young induced an increase in voting behavior by means of such a "self‐prophecy" effect: Undergraduates who were asked to predict whether they would vote in an upcoming election were substantially more likely to go to the polls than those who had not been asked for a prediction. This paper reports on a replication of the Greenwald study conducted among a larger group of respondents more representative of the American electorate. No evidence was found that self‐prophecy effects increase voter turnout.

Psychological research has found that being asked to predict one's future actions can bring about subsequent behavior consistent with the prediction but different from what would have occurred had no prediction been made. In a 1987 study, Greenwald, Carnot, Beach, and Young induced an increase in voting behavior by means of such a "self-prophecy" effect: undergraduates who were asked to predict whether they would vote in an upcoming election were substantially more likely to go to the polls than those who had not been asked for a prediction. This paper reports on a replication of the Greenwald study conducted among a larger group of respondents more representative of the American electorate. No evidence was found that self-prophecy effects increase voter turnout. 3 Tables, 17 References. (Original abstract - amended)

Hate crime is difficult to define, measure, and explain. After summarizing some of the leading conceptual issues and theoretical perspectives, we discuss the practical difficulties associated with data collection. Although the research literature remains small and largely descriptive, recent studies have begun to relate hate crime patterns to economic cycles, population flows, and changes in the political environment. The task ahead is to extend these analyses to other settings and levels of aggregation.

Currently there is no FDA-licensed vaccine or therapeutic against Sudan ebolavirus (SUDV) infections. The largest ever reported 2014–2016 West Africa outbreak, as well as the 2021 outbreak in the Democratic Republic of Congo, highlight the critical need for countermeasures against filovirus infections. A well-characterized small animal model that is susceptible to wild-type filoviruses would greatly add to the screening of antivirals and vaccines. Here, we infected signal transducer and activator of transcription-1 knock out (STAT-1 KO) mice with five different wildtype filoviruses to determine susceptibility. SUDV and Marburg virus (MARV) were the most virulent, and caused 100% or 80% lethality, respectively. Zaire ebolavirus (EBOV), Bundibugyo ebolavirus (BDBV), and Taï Forest ebolavirus (TAFV) caused 40%, 20%, and no mortality, respectively. Further characterization of SUDV in STAT-1 KO mice demonstrated lethality down to 3.1 × 10(1) pfu. Viral genomic material was detectable in serum as early as 1 to 2 days post-challenge. The onset of viremia was closely followed by significant changes in total white blood cells and proportion of neutrophils and lymphocytes, as well as by an influx of neutrophils in the liver and spleen. Concomitant significant fluctuations in blood glucose, albumin, globulin, and alanine aminotransferase were also noted, altogether consistent with other models of filovirus infection. Finally, favipiravir treatment fully protected STAT-1 KO mice from lethal SUDV challenge, suggesting that this may be an appropriate small animal model to screen anti-SUDV countermeasures.