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This book presents a simple geometric model of voting as a tool to analyze parliamentary roll call data. Each legislator is represented by one point and each roll call is represented by two points that correspond to the policy consequences of voting Yea or Nay. On every roll call each legislator votes for the closer outcome point, at least probabilistically. These points form a spatial map that summarizes the roll calls. In this sense a spatial map is much like a road map because it visually depicts the political world of a legislature. The closeness of two legislators on the map shows how similar their voting records are, and the distribution of legislators shows what the dimensions are. These maps can be used to study a wide variety of topics including how political parties evolve over time, the existence of sophisticated voting and how an executive influences legislative outcomes.

This book presents a simple geometric model of voting as a tool to analyze parliamentary roll call data. Each legislator is represented by one point and each roll call is represented by two points that correspond to the policy consequences of voting Yea or Nay. On every roll call each legislator votes for the closer outcome point, at least probabilistically. These points form a spatial map that summarizes the roll calls. In this sense a spatial map is much like a road map because it visually depicts the political world of a legislature. The closeness of two legislators on the map shows how similar their voting records are, and the distribution of legislators shows what the dimensions are. These maps can be used to study a wide variety of topics including how political parties evolve over time, the existence of sophisticated voting and how an executive influences legislative outcomes.

In Ideology and Congress, authors Poole and Rosenthal have analyzed over 13 million individual roll call votes spanning the two centuries since Congress began recording votes in 1789. By tracing the v

Behind every financial crisis lurks a "political bubble"--policy biases that foster market behaviors leading to financial instability. Rather than tilting against risky behavior, political bubbles--ar

The idea of America as politically polarized -- that there is an unbridgeable divide between right and left, red and blue states -- has become a cliché. What commentators miss, however, is that increa

Argues that political decisions foster market behaviors that lead to financial instability.

The idea of America as politically polarized--that there is an unbridgeable dividebetween right and left, red and blue states--has become a cliche. What commentators miss, however,is that increasing p

The idea of America as politically polarized--that there is an unbridgeable divide between right and left, red and blue states--has become a cliche. What commentators miss, however, is that increasing

Suitable for researchers and graduate students in the social sciences, this book shows how to apply spatial models using R to a wide range of data from political science and related areas. It also cov