Dimpled Chad offers unprecedented access to trends in American voter registration and turnout.

The Ballot Box Tools

The links provide an explanation of the Basic Version, Advanced Version, and Graphing Tools.

See the Sources page for details on how the data was assembled and adjusted prior to our statistical analyses, the question frequency, the question wording for the specific survey questions, as well as other relevant information.

Users are welcome to use any of the results reported for their own work as long as the following citation is provided:

Best, Samuel J., Brian S. Krueger, Jeffrey W. Ladewig, and Clifford D. Vickrey. 2012. Dimpled Chad. Retrieved from