Archival Version

The Panel Study is designed to represent the population of United States citizens aged 18 years and older as of November 4, 2008 (Election Day). Individuals who, at the time of recruitment, were United States citizens, born on or before November 4, 1990, and residing in a United States household (all 50 states and the District of Columbia, but excluding areas without electoral votes) with a landline telephone.

本追踪调查（Panel Study）旨在代表截至2008年11月4日（美国选举日）年满18周岁及以上的美国公民群体。本次研究的招募对象需满足以下条件：招募时为美国公民，出生日期不晚于1990年11月4日，且居住在配备固定电话的美国家庭（该家庭所在地区为全美50个州及哥伦比亚特区，但排除无选举人票的区域）。