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Virtual Office Hours will be held Wednesdays from 12:00 pm to 2:00 pm. 

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Recent Publications

Measuring Constituency Ideology Using Bayesian Universal Kriging
Gill, Jeff. “Measuring Constituency Ideology Using Bayesian Universal Kriging.” State Politics & Policy Quarterly (2020). Abstract
In this article, we develop and make available measures of public ideology in 2010 for the 50 American states, 435 congressional districts, and state legislative districts. We do this using the geospatial statistical technique of Bayesian universal kriging, which uses the locations of survey respondents, as well as population covariate values, to predict ideology for simulated citizens in districts across the country. In doing this, we improve on past research that uses the kriging technique for forecasting public opinion by incorporating Alaska and Hawaii, making the important distinction between ZIP codes and ZIP Code Tabulation Areas, and introducing more precise data from the 2010 Census. We show that our estimates of ideology at the state,
congressional district, and state legislative district levels appropriately predict the ideology of legislators elected from these districts, serving as an external validity check.
Generalized Linear Models: A Unified Approach
Gill, Jeff, and Michelle Torres. Generalized Linear Models: A Unified Approach. Second Ed. Thousand Oaks, CA: Sage, 2019. Publisher's Version Abstract

Generalized Linear Models: A Unified Approach provides an introduction to and overview of GLMs, with each chapter carefully laying the groundwork for the next. The Second Edition provides examples using real data from multiple fields in the social sciences such as psychology, education, economics, and political science, including data on voting intentions in the 2016 U.S. Republican presidential primaries. The Second Edition also strengthens material on the exponential family form, including a new discussion on multinomial distribution; adds more information on how to interpret results and make inferences in the chapter on estimation procedures; and has a new section on extensions to generalized linear models.


Software scripts, supporting documentation, data for the examples, and some extended mathematical derivations are available on the authors’ websites as well as through the \texttt{R} package \texttt{GLMpack}. All links are available at


Useful Links for Graduate Students

American University in Washington, DC

Tenure Home: School of Public Affairs, College of Arts & Sciences


Featured Recent Paper

Nikoleta S. Kolovos, Jeff Gill, Peter H. Michelson, Allan Doctor, Mary E. Hartman. ``Reduction in Mortality Following Pediatric Rapid Response Team Implementation.'' Pediatric Critical Care Medicine, 2018.

Paper LinkPubMed.

I am also Editor-in-Chief of Political Analysis

Political Analysis