Electoral Data for Counties in the United States: Presidential and Congressional Races, 1840-1972

This collection contains county-level returns for elections to the United States presidency and to the United States House of Representatives for the years 1840 to 1972. The variables for the presidential vote include the percentages of ballots cast for major and "significant" minor party candidates (with residual votes collapsed into an "other" category), total numbers of votes for all candidates in an election, and estimates of voter turnout in the presidential elections. There are similar variables for the congressional vote except that returns are reported for parties and not for candidates. Congressional district numbers are also reported for each county for every election.

本数据集收录了自1840年至1972年间美国总统选举及美国众议院选举的县级投票结果。其中，总统选举投票变量包括主要及“显著”的少数党派候选人得票百分比（将剩余选票合并为“其他”类别），以及选举中所有候选人得票总数，并对总统选举的选民投票率进行估算。对于国会选举，变量设置相似，但回报的是党派而非候选人。此外，每个县在每个选举中的国会选区编号也被记录在案。