Learn More
Katz and King have previously proposed a statistical model for multiparty election data. They argue that ordinary least-squares (OLS) regression is inappropriate when the dependent variable measures the share of the vote going to each party, and they recommend a superior technique. Regrettably, the Katz–King model requires a high level of statistical(More)
In countries where citizens have strong grievances against the regime, attempts to address these grievances in the course of daily life are likely to entail high costs coupled with very low chances of success in any meaningful sense; consequently, most citizens will choose not to challenge the regime, thus reflecting the now well-known collective action(More)
Are legislators responsive to their constituents in their public communication? To what extent are they able to shape voters' preferences, as expressed by the issues they discuss? We address this twofold question with an analysis of all tweets sent by U.S. Members of Congress and a random sample of their followers from January to August 2013. Using a Latent(More)
We estimated ideological preferences of 3.8 million Twitter users and, using a data set of nearly 150 million tweets concerning 12 political and nonpolitical issues, explored whether online communication resembles an "echo chamber" (as a result of selective exposure and ideological segregation) or a "national conversation." We observed that information was(More)
Senators Ron Wyden (D-Ore.) and Byron L. Dorgan (D-N.D.) held a press conference to call attention to a DARPA (Defense Advanced Research Projects Agency) project that would allow investors to bet on future political events in the Middle East—including terrorist attacks—through a commodity-market style trading system. On July 29, newspapers responded by(More)
Despite many examples to the contrary, most models of elections assume that rules determining the winner will be followed. We present a model where elections are solely a public signal of the incumbent popularity, and citizens can protests against leaders that do not step down from power. Compliance with electoral rules is possible when citizens are(More)
Social media have provided instrumental means of communication in many recent political protests. The efficiency of online networks in disseminating timely information has been praised by many commentators; at the same time, users are often derided as "slacktivists" because of the shallow commitment involved in clicking a forwarding button. Here we consider(More)
We analyze the results Poland's historic June, 2003 referendum on whether or not to join the European Union (EU). We find that demographic factors did not play a particularly large role in determining vote choice in the referendum. As alternatives, we propose economic, political, and party based hypotheses, and find empirical support for all three. We also(More)
Voter turnout in post-communist countries has exhibited wildly fluctuating patterns against a backdrop of economic and political volatility. In this article, we consider three explanations for this variation: a ''depressing disenchantment'' hypothesis that predicts voters are less likely to vote in elections when political and economic conditions are worse;(More)