The social identity voting model: Ideology and community structures
Social identity voting (SIV) is a new model of voting behavior based on the principles of social identity theory. We introduce and use this model to analyze roll call votes for the 35 th through 112 th US Congresses. Comparing out-of-sample accuracy of SIV and Poole and Rosenthal’s Weighted NOMINAL...
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doaj-bf6a3b4e7903480f8e984e38f4926cbd2020-11-25T02:50:41ZengSAGE PublishingResearch & Politics2053-16802015-04-01210.1177/205316801557041510.1177_2053168015570415The social identity voting model: Ideology and community structuresScott D Pauls0Greg Leibon1Daniel Rockmore2Department of Mathematics, Dartmouth College, Hanover, USADepartment of Mathematics, Dartmouth College, Hanover, USADepartment of Mathematics, Dartmouth College, Hanover, USA; Department of Computer Science, Dartmouth College, Hanover, USA; The Santa Fe Institute, USASocial identity voting (SIV) is a new model of voting behavior based on the principles of social identity theory. We introduce and use this model to analyze roll call votes for the 35 th through 112 th US Congresses. Comparing out-of-sample accuracy of SIV and Poole and Rosenthal’s Weighted NOMINAL Three-step Estimation (W-NOMINATE), we find that SIV performs better than the one- or two-dimensional W-NOMINATE model and that generally, W-NOMINATE needs up to 10 dimensions to produce accuracy comparable to that of SIV. The differences between SIV and W-NOMINATE are further clarified in three case studies: first, a longitudinal examination of all Congresses; second, an analysis of the 112 th House of Representatives; and third, a study of the Tea Party caucus in the 112 th House of Representatives. Each study sheds new light on the potential motivations driving voting behavior, supporting our assertion that the SIV and W-NOMINATE models provide two distinct approaches to understanding voting records. SIV, with its emphasis on political identity derived from group membership, expresses combinations of individual and group preferences which contribute to legislators’ ideological classifications.https://doi.org/10.1177/2053168015570415 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Scott D Pauls Greg Leibon Daniel Rockmore |
spellingShingle |
Scott D Pauls Greg Leibon Daniel Rockmore The social identity voting model: Ideology and community structures Research & Politics |
author_facet |
Scott D Pauls Greg Leibon Daniel Rockmore |
author_sort |
Scott D Pauls |
title |
The social identity voting model: Ideology and community structures |
title_short |
The social identity voting model: Ideology and community structures |
title_full |
The social identity voting model: Ideology and community structures |
title_fullStr |
The social identity voting model: Ideology and community structures |
title_full_unstemmed |
The social identity voting model: Ideology and community structures |
title_sort |
social identity voting model: ideology and community structures |
publisher |
SAGE Publishing |
series |
Research & Politics |
issn |
2053-1680 |
publishDate |
2015-04-01 |
description |
Social identity voting (SIV) is a new model of voting behavior based on the principles of social identity theory. We introduce and use this model to analyze roll call votes for the 35 th through 112 th US Congresses. Comparing out-of-sample accuracy of SIV and Poole and Rosenthal’s Weighted NOMINAL Three-step Estimation (W-NOMINATE), we find that SIV performs better than the one- or two-dimensional W-NOMINATE model and that generally, W-NOMINATE needs up to 10 dimensions to produce accuracy comparable to that of SIV. The differences between SIV and W-NOMINATE are further clarified in three case studies: first, a longitudinal examination of all Congresses; second, an analysis of the 112 th House of Representatives; and third, a study of the Tea Party caucus in the 112 th House of Representatives. Each study sheds new light on the potential motivations driving voting behavior, supporting our assertion that the SIV and W-NOMINATE models provide two distinct approaches to understanding voting records. SIV, with its emphasis on political identity derived from group membership, expresses combinations of individual and group preferences which contribute to legislators’ ideological classifications. |
url |
https://doi.org/10.1177/2053168015570415 |
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