A data set on the presence of the direct primary in U.S. congressional elections and the vote shares for the Democratic, Republican, and third parties. Based on ICPSR Study 6985
primaryA data frame with 1164 observations and the following 7 variables:
name of the state
year of the congressional election
percentage of the total vote cast for the Democratic candidate, 0-100
percentage of the total vote cast for the Republican candidate, 0-100
percentage of the total vote cast for other parties, 0-100
binary variable indicating if the state had the direct primary (=1) or not (=0)
binary variable indicating if the state is in the South (=1) or not (=0)
David, Paul T., and Claggett, William. Party Strength in the United States: 1872-1996. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2008-09-10. https://doi.org/10.3886/ICPSR06895.v1