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A sample rollcall object, generated using a collection of the rollcalls of the 109th U.S. Senate (2005-2006).
data(s109)
A rollcall object containing the recorded votes of the 109th U.S. Senate, plus information identifying the legislators and the rollcalls.
rollcall
Note the coding scheme used by Poole and Rosenthal; Yea (1), Nay (6) etc.