California Initiative/Referendum Data (2000-2012) (ICPSR 34627)

Version Date: May 21, 2013 View help for published

Principal Investigator(s): View help for Principal Investigator(s)
Jeff Hastings, Utah State University. Department of Political Science

Version V1

This data collection contains information about initiative/referendum campaigns in California from 2000 to 2012. Information was gathered regarding campaign donations, expenditures, interest group involvement, legal challenges, and mainstream newspaper coverage for each initiative and referendum. The data includes whether the campaigns concerned certain issues related to the environment, law enforcement, and controversial issues such as abortion and same-sex marriage. Additionally, the collection noted whether the election takes place in a presidential year, an even year, and whether the campaign is on the November ballot.

Hastings, Jeff. California Initiative/Referendum Data (2000-2012). Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2013-05-21.

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Inter-university Consortium for Political and Social Research
2000 -- 2012
2000 -- 2012

This data collection uses a binomial regression model that calculates the likelihood of a legal challenge based upon information from initiative/referendum campaigns from 2000 to 2012 years in California.

California Initiative/Referendum Campaigns

Initiative/Referendum Campaign
administrative records data, aggregate data, observational data


2018-02-15 The citation of this study may have changed due to the new version control system that has been implemented. The previous citation was:
  • Hastings, Jeff. California Initiative/Referendum Data (2000-2012). ICPSR34627-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2013-05-21.

2013-05-21 ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

  • Created variable labels and/or value labels.
  • Checked for undocumented or out-of-range codes.


  • Data in this collection are available only to users at ICPSR member institutions.

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