(Crown Publishing Group) - The Victory Lab by Sasha Issenberg.

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How did the late-night comedy show see the vice presidential debate?

Turnout is where precision targeting really works, says Sasha Issenberg, author of The Victory Lab: The Secret Science of Winning Campaigns. Political scientists are using the tools of behavioral economics and behavioral psychology to understand why people vote and how to enforce that habit; campaigns are building voting scores for people in their databases like the financial industry builds credit scores.

Does it work? More than 1.1 million people already have voted, according to early voting statistics collated by George Mason University political scientist Michael McDonald, and plenty of them were prodded to do so without ever knowing it.

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Obama, Romney have ways to make you vote