In Iowa, although voter-registration information is free and available to the public, voter history is not. That information is maintained by the secretary of state, who licenses it to campaigns, super PACs, polling firms, and any other entity that might want it. So was the Cruz campaign accurately portraying the voter histories of Iowans? Or did it simply make up the numbers?

It seems to have made them up. Dave Peterson, a political scientist at Iowa State University who is well-acquainted with the research on “social pressure” turnout techniques, received a mailer last week. The Cruz campaign pegged his voting percentage at fifty-five per cent, which seems to be the most common score that the campaign gives out. (All of the neighbors listed on Peterson’s mailer also received a score of fifty-five per cent.)
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“There are other people listed on my mailer who live in my neighborhood that are all different ages, but everyone on this sheet has the same score of fifty-five per cent,” he said. “Some are significantly younger and would have not been eligible to vote in these elections, and others are older and have voted consistently, going back years. There is no way to get to us all having the same score.”

If the Cruz campaign based its score on local elections, Peterson said, the number also wouldn’t make sense, based on his participation in those elections as well. A source with access to the Iowa voter file told me that he checked several other names on Cruz mailers and that the voting histories of those individuals did not match the scores that the Cruz campaign assigned them in the mailer.