Obama’s Data Team Totally Schooled Gallup

… But given the collaborative effort and many moving parts of a modern presidential campaign, it can be difficult to isolate the data team’s contribution. One great example, though, is the intricate mathematical models of swing states that [Dan] Wagner and colleagues built that were meant to offer an alternative glimpse of the state of the race to public polls and even the campaign’s internal polls. …

Here, for the first time, is a chart based on internal data that shows how the Obama campaign’s swing state model performed against the much maligned Gallup poll over the last several months of the race. This was the campaign’s daily “horserace” projection of the outcome, based on a nightly survey of 10,000 people. [cont.]

Joshua Green, Bloomberg Businessweek

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