California Assembly and Senate Roll Call Votes, 1993 to the present

Jeff Lewis

This page contains recent roll call voting data from the California Assembly and Senate. The data are culled from webpages of the California legislature. Zip archives are provided for each two-year session. Each zip file contains two files:

  • caYY-YYvotes.dat: A matrix of all votes cast by every member of both chambers in committee and on the floor. Votes are recorded as:

    ValueVote
    1'Yea'
    6'No'
    9'Not voting/not present'
    0'Not in chamber or on committee'

  • caYY-YYdesc.dat: A tab separated file describing the location, sponsor, content, and outcome of each vote taken. The fields are the following:
    Column NumberVariable
    1Vote column in the vote matrix
    2Bill number
    3Sponsor/Author
    4Topic
    5Date
    Column NumberVariable
    6Location
    7Motion
    8Yeas
    9Noes
    10Pass/Fail

    The rollcall data matrices are large as they include every vote taken in both chambers including both committee and floor votes. The R language functions included in calrollcall.R can be used to create subsets of these large vote matrices based on given criteria allowing the user to pull votes from a given chamber or committee or from given dates, and so forth.

  • Data to download

    Session Total Members Total Votes Archive
    1993-9415026,795caleg93-94.zip
    1995-9612723,209caleg95-96.zip
    1997-9812424,380 caleg97-98.zip
    1999-0012225,053caleg99-00.zip
    2001-0212123,294caleg01-02.zip
    2003-0412221,026 caleg03-04.zip
    2005-06122 20,638caleg05-06.zip
    2007-0812320,436caleg07-08.zip
    2009-1012418,370caleg09-10.zip
    2011-1212117,221caleg11-12.zip
    2013-1412618,059caleg13-14.zip
    1/1/15-6/10/151244,812caleg15-16.zip

    These data are provided without guarantee of their accuracy. Please feel free to point out any problems that you might find. Please attribute these data to me if you use them in your work and send links to the working papers and publications that use these data.