摘要：Recently, voter ID laws have been instituted, modified, or overturned in many states in the U.S. As these laws
change, it is important to have accurate measures of their impact. We present the data collection methods
and results of class projects that attempted to quantify the impact of the voter ID laws in areas of three
states. We also summarize the types of data used to assess the impact of voter ID laws and discuss how our
data address some of the shortcomings of the usual techniques for assessing the impact of voter ID laws.
关键词：Voter ID laws ; Exit polling ; Community-based learning ; Observational study
