scotus.1937.2021

mqVotes

mqTime

This dataset contains voting records from the U.S. Supreme Court between 1937 and 2021.
Loading `data(scotus.1937.2021)` will load the following two independent objects into the environment:

datasets

Bayesian estimation and analysis methods for Probit Unfolding Models (PUMs), a novel class of scaling models designed for binary preference data. These models allow for both monotonic and non-monotonic response functions. The package supports Bayesian inference for both static and dynamic PUMs using Markov chain Monte Carlo (MCMC) algorithms with minimal or no tuning. Key functionalities include posterior sampling, hyperparameter selection, data preprocessing, model fit evaluation, and visualization. The methods are particularly suited to analyzing voting data, such as from the U.S. Congress or Supreme Court, but can also be applied in other contexts where non-monotonic responses are expected. For methodological details, see Shi et al. (2025) <doi:10.48550/arXiv.2504.00423>.

Skylar Shi

pumBayes

Bayesian Estimation of Probit Unfolding Models for Binary
Preference Data

Abel Rodriguez

Rayleigh Lei

Jonathan Olmsted

scotus.1937.2021 function

The dataset consists of the following two objects:<dl>
 <dt>mqVotes</dt>
<dd>A `48 × 6108` matrix, where each row represents a judge and each column represents a case. Entries are:<ul>
<li>`1` (`TRUE`): The judge voted to reverse the lower court decision.</li>
<li>`0` (`FALSE`): The judge voted to uphold the lower court decision.</li>
<li>`NA`: The judge did not vote on the case.</li>
</ul></dd> <dt>mqTime</dt>
<dd>A numeric vector of length `6108`, indicating the time period associated with each case.</dd>
</dl>

Format

U.S. Supreme Court Voting Data (1937-2021) — scotus.1937.2021

The dataset consists of the following two objects:<dl>
 <dt>mqVotes</dt>
<dd>A `48 × 6108` matrix, where each row represents a judge and each column represents a case. Entries are:<ul>
<li>`1` (`TRUE`): The judge voted to reverse the lower court decision.</li>
<li>`0` (`FALSE`): The judge voted to uphold the lower court decision.</li>
<li>`NA`: The judge did not vote on the case.</li>
</ul></dd>

 <dt>mqTime</dt>
<dd>A numeric vector of length `6108`, indicating the time period associated with each case.</dd>


</dl>

scotus.1937.2021: U.S. Supreme Court Voting Data (1937-2021)

Description

Usage

Arguments

Format

Examples