Cosponsorship Coalitions in the U.S. House of Representatives
Grant, J. Tobin
Pellegrini, Pasquale (Pat) A.
urrent theories and methods for studying of cosponsorship assume that
the decision to cosponsor is identical to decision to vote. In this
paper we develop a new theory of cosponsorship that identifies where
along the ideological spectrum cosponsors of a bill are more likely to
be. Moreover, we predict that members with organizational ties to the
sponsor are more likely to cosponsor than other members. To test this
theory, we employ a spatial duration model. This method has recently
been used by geographers to estimate areas that are more likely to
experience an "event." Using this technique permits a statistical test
that supports our substantive hypotheses that cosponsorship coalitions
are shaped by the characteristics of the location of the bill, the
shared ties to the sponsor, and the policy area. In addition, more
active sponsors are associated with wider and less clustered coalitions.
These findings demonstrate that theories of the voting decision are not
applicable to cosponsorship.
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