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Collaborative Multi-racial Post-election Survey (CMPS), 2008 (ICPSR 35163)

Version Date: Aug 21, 2014 View help for published

Principal Investigator(s): View help for Principal Investigator(s)
Matt A. Barreto, University of Washington-Seattle; Lorrie Frasure-Yokley, University of California, Los Angeles; Ange-Marie Hancock, University of Southern California; Sylvia Manzano, Latino Decisions; S. Karthick (Subramanian Karthick) Ramakrishnan, University of California, Riverside; Ricardo Ramirez, University of Notre Dame; Gabriel Sanchez, University of New Mexico; Janelle Wong, University of Maryland

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The 2008 Collaborative Multi-racial Post-election Survey (CMPS) is a national telephone survey of registered voters, with comparably large samples of African Americans, Asian Americans, Latinos, and Whites. The telephone survey, conducted between November 9, 2008 and January 5, 2009, is the first multiracial and multilingual survey of registered voters across multiple states and regions in a presidential election. In contrast to the 2008 American National Election Study (ANES) which oversampled Black and Latino voters, and was available in Spanish, the CMPS was available in six languages and contains robust samples of the four largest racial/ethnic groups: Whites, Latinos, Blacks, Asians. The CMPS contains 4,563 respondents who registered to vote in the November 2008 election and who self-identified as Asian, Black, Latino, and White. The survey was available in English, Spanish, Mandarin, Cantonese, Korean, Vietnamese and respondents were offered the opportunity to interview in their language of choice. The six states that were sampled to produced robust samples of all four major racial groups include California, Texas, New York, Florida, Illinois, and New Jersey, and the statewide samples range from 243 to 669 cases. In order to arrive at more nationally representative samples of each minority group, the study added two supplemental states per racial group, including Arizona and New Mexico (Latinos), North Carolina and Georgia (Blacks), Hawaii and Washington (Asians). Of these 12 states, 3 were considered political battlegrounds in the 2008 Presidential electorate -- New Mexico, Florida, and North Carolina. In order to examine multi-racial politics in competitive and non-competitive environments, the study supplemented the sample with six additional diverse battleground states: Colorado, Michigan, Nevada, Ohio, Pennsylvania, and Virginia. As of the 2008 election, two-thirds of the national electorate was concentrated in these 18 states. For Latinos, 92 percent of all registered voters reside in these states; 87 percent of Asian Americans; and 66 percent of Blacks, and 61 percent of Whites. The November 2008 CMPS provides estimates of the registered voter population by race, age, gender, and education level which was applied to the sample, by racial group, so that the distributions match those of the Census on these important demographic categories. In the study, there are 51 items dealing with sociopolitical attitudes, mobilization and political activity. Additionally, there are 21 items that capture demographic information, including: age, ancestry, birthplace, education, ethnicity, marital status, number in the household, religiosity, gender, media usage and residential context.

Barreto, Matt A., Frasure-Yokley, Lorrie, Hancock, Ange-Marie, Manzano, Sylvia, Ramakrishnan, S. Karthick (Subramanian Karthick), Ramirez, Ricardo, … Wong, Janelle. Collaborative Multi-racial Post-election Survey (CMPS), 2008. Inter-university Consortium for Political and Social Research [distributor], 2014-08-21.

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Census tract

Inter-university Consortium for Political and Social Research

2008-11 -- 2009-01
2008-11-09 -- 2009-01-05

The survey contains an overall sample of 4,563 with a margin of error of 1.5 percent for the national sample, 2.5 percent for the Latino sample, and 3.2 percent for the White, Black and Asian samples. The sample was drawn of registered voters using the official statewide databases of registered voters, maintained by elections officials in each of the 18 states. For voters without listed phone numbers, records were enriched using a combination of public and private sources of consumer information by Catalist Data Services. The vendor classified the sample by racial/ethnic group based on a combination of variables: first and last name, population density, and consumer information. In 2008, Catalist had the most comprehensive database of registered voters and is particularly useful in studying multi-racial populations because of their classification methodology. All interviews were conducted by live interviewers, via telephone to landlines and mobile phone numbers when they were directly supplied by registered voters on the voter list.


The CMPS contains 4,563 respondents who voted in the November 2008 election and who self-identified as Asian, Black, Latino, and White.


AAPOR response rate-1 was 11.4 percent and response rate-3 was 41.9 percent; the average survey length was 24.8 minutes.



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:
  • Barreto, Matt A., Lorrie Frasure-Yokley, Ange-Marie Hancock, Sylvia Manzano, S. Karthick (Subramanian Karthick) Ramakrishnan, Ricardo Ramirez, Gabriel Sanchez, and Janelle Wong. Collaborative Multi-racial Post-election Survey (CMPS), 2008. ICPSR35163-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2014-08-21.

2014-08-19 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:

  • Performed consistency checks.
  • Created variable labels and/or value labels.
  • Standardized missing values.
  • Created online analysis version with question text.
  • Performed recodes and/or calculated derived variables.
  • Checked for undocumented or out-of-range codes.

Post-stratification weights were applied to correct for any discrepancies for age, gender, and education which may accompany telephone surveys. The November 2008 CPS provides estimates of the registered voter population by race, age, gender, and education level which we applied to our sample, by racial group, so that our distributions match those of the Census on these important demographic categories.



  • Curation and dissemination of this study is provided by the institutional members of ICPSR, and data is available only to users at ICPSR member institutions. To determine if you are at a member institution, check the list of ICPSR member institutions, or learn more about becoming a member.