1. A ballot tabulation device for analyzing one or more voter response areas on a paper ballot, comprising: a scanner operable to obtain an image of at least a portion of the paper ballot that includes a voter response area; a processor operable to analyze the image by: applying a virtual template to the image to identify a reference point for the voter response area; using the reference point for the voter response area to define a response window; and analyzing the response window to determine if the voter response area is marked by a voter.