A group of researchers from across the United States say they have found the effectiveness of voter mobilization efforts rests on quality and a personal touch.

Using results from several field experiments, scientists say they’ve found personal telephone calls have increased voter turnout by 3 percentage points among Asian-Americans. But they discovered that while live telephone calls to Latino voters increased voter participation, robotic calls had little impact.

Drawing important distinctions between various forms of mobilization activities, researchers analyzed partisan vs. non-partisan and personal vs. impersonal techniques and the effects on specific population groups.

The researchers individually studied the results of get-out-the-vote campaigns among Latino, Asian-American and American-Indian voters.

In addition, the study also looked at the mobilizing effects of a Democratic campaign targeting young voters, as well as direct mail and phone campaigns out of commercial phone banks.

Yet other researchers looked at three large-scale experiments that focused on pre-election survey participation that affected voter participation.

The study, edited at Yale University, appears in the September volume of The Annals of the American Academy of Political and Social Science.

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