Record of American Democracy, State Level MCD-Group Data for NE

The Record of American Democracy (ROAD) data provide election returns, socioeconomic summaries, and demographic details about the American public at unusually low levels of geographic aggregation. The NSF-supported ROAD project spans every state in the country from 1984 through 1990 (including some off-year elections). These data enable research on topics such as electoral behavior, the political characteristics of local community context, electoral geography, the role of minority groups in elections and legislative redistricting, split ticket voting and divided government, and elections under federalism.
<br /> <br /> Another set of files has added to these roughly 30-40 political variables an additional 3,725 variables merged from the 1990 United States Census for 47,327 aggregate units called MCD Groups. The MCD Group is a construct for purposes of this data collection. It is based on a merging of the electoral precincts and Census Minor Civil Divisions (MCDs). An MCD is about the size of a city or town. An MCD Group is smaller than or equal to a county and (except in California) is greater
than or equal to the size of an MCD. The MCD Group units completely tile the United States landmass. This particular study contains the files for the State Level MCD Group Data for the state of Nebraska.
<br /> <br /> Documentation and frequently asked questions are available online at the <a href="http://www.hmdc.harvard.edu/ROAD/">ROAD Website</a>. A downloadable PDF codebook is also available in the files section of this study.<br /> <br />

美国民主记录数据集（Record of American Democracy，ROAD）提供了美国民众的选举结果、社会经济汇总数据与人口统计细节，其空间聚合粒度处于异常精细的层级。由美国国家科学基金会（National Science Foundation，NSF）资助的ROAD项目覆盖全美所有州，时间跨度为1984年至1990年（包含部分非大选年选举）。该数据集可支撑诸多主题的研究，包括选举行为、地方社区环境的政治特征、选举地理学、少数群体在选举与立法重划选区中的作用、分裂选票投票与分裂政府，以及联邦制框架下的选举活动。<br /><br />另有一组文件在原有的约30至40个政治变量基础上，新增了3725个额外变量；这些变量源自1990年美国人口普查，对应47327个名为MCD群组（MCD Groups）的聚合单元。MCD群组是本数据集采集工作中设定的统计单元，其由选举选区与人口普查次要民政分区（Minor Civil Divisions，MCDs）合并构建而成。MCD的规模大致相当于一座城市或城镇；MCD群组的空间范围小于或等于一个县，且除加利福尼亚州外，其规模大于或等于一个MCD。所有MCD群组单元完整覆盖了美国陆地疆域。本数据集收录了内布拉斯加州的州级MCD群组数据文件。<br /><br />数据集的文档与常见问题解答可在线访问ROAD官网（ROAD Website，访问地址：http://www.hmdc.harvard.edu/ROAD/）。本数据集的文件专区中还提供可下载的PDF格式代码本。