The Rise of Partisanship and Super-Cooperators in the US House of Representatives

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It is widely reported that partisanship in the United States Congress is at an historic high. Given that individuals are persuaded to follow party lines while having the opportunity and incentives to collaborate with members of the opposite party, our goal is to measure the extent to which legislators tend to form ideological relationships with members of the opposite party. We quantify the level of cooperation, or lack thereof, between Democrat and Republican Party members in the U.S. House of Representatives from 1949-2012. We define a network of over 5 million pairs of representatives, and compare the mutual agreement rates on legislative decisions between two distinct types of pairs: those from the same party and those formed of members from different parties. We find that despite short-term fluctuations, partisanship or non-cooperation in the U.S. Congress has been increasing exponentially for over 60 years with no sign of abating or reversing. Yet, a group of representatives continue to cooperate across party lines despite growing partisanship.
Publisher
PUBLIC LIBRARY SCIENCE
Issue Date
2015-04
Language
English
Article Type
Article
Keywords

COSPONSORSHIP NETWORKS; COMMUNITY STRUCTURE; PARTY POLARIZATION; POLITICS; DYNAMICS

Citation

PLOS ONE, v.10, no.4

ISSN
1932-6203
DOI
10.1371/journal.pone.0123507
URI
http://hdl.handle.net/10203/225637
Appears in Collection
CE-Journal Papers(저널논문)
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