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Released: July 22, 2011

GOP Makes Big Gains among White Voters

Especially among the Young and Poor

About the Party Identification Database

The analysis of changes in party identification over time is based on a compilation of 223 surveys and about 300,000 interviews among registered voters conducted by the Pew Research Center from January 1990 to June 2011. These surveys are combined into one large data file that can be sorted according to a range of demographic characteristics, with comparisons made across different time periods. Yearly totals are calculated by combining all surveys for the calendar year, with appropriate weights applied. The table below shows the number of surveys and interviews conducted each year as well as the margin of error for each yearly sample.

 

 

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