The Annals of Applied Statistics

Exit polling and racial bloc voting: Combining individual-level and R×C ecological data

D. James Greiner and Kevin M. Quinn

Full-text: Open access

Abstract

Despite its shortcomings, cross-level or ecological inference remains a necessary part of some areas of quantitative inference, including in United States voting rights litigation. Ecological inference suffers from a lack of identification that, most agree, is best addressed by incorporating individual-level data into the model. In this paper we test the limits of such an incorporation by attempting it in the context of drawing inferences about racial voting patterns using a combination of an exit poll and precinct-level ecological data; accurate information about racial voting patterns is needed to assess triggers in voting rights laws that can determine the composition of United States legislative bodies. Specifically, we extend and study a hybrid model that addresses two-way tables of arbitrary dimension. We apply the hybrid model to an exit poll we administered in the City of Boston in 2008. Using the resulting data as well as simulation, we compare the performance of a pure ecological estimator, pure survey estimators using various sampling schemes and our hybrid. We conclude that the hybrid estimator offers substantial benefits by enabling substantive inferences about voting patterns not practicably available without its use.

Article information

Source
Ann. Appl. Stat., Volume 4, Number 4 (2010), 1774-1796.

Dates
First available in Project Euclid: 4 January 2011

Permanent link to this document
https://projecteuclid.org/euclid.aoas/1294167798

Digital Object Identifier
doi:10.1214/10-AOAS353

Mathematical Reviews number (MathSciNet)
MR2829936

Zentralblatt MATH identifier
1220.62159

Keywords
Ecological inference Bayesian inference voting rights litigation exit polls survey sampling

Citation

Greiner, D. James; Quinn, Kevin M. Exit polling and racial bloc voting: Combining individual-level and R×C ecological data. Ann. Appl. Stat. 4 (2010), no. 4, 1774--1796. doi:10.1214/10-AOAS353. https://projecteuclid.org/euclid.aoas/1294167798


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Supplemental materials

  • Supplementary material A: Supplement to “Exit polling and racial bloc voting: Combining individual-level and R×C ecological data”. This supplement describes the algorithms used to fit the models described in “Exit polling and racial bloc voting: Combining individual-level and R×C ecological data.”.
  • Supplementary material B: Replication materials for “Exit polling and racial bloc Voting: Combining individual-level and R×C ecological data”. This supplement provides data and computer code that can be used to replicate the results in “Exit polling and racial bloc voting: Combining individual-level and R×C ecological data.”.