The Poll Manipulator

It's that time of year -- the time when everyone gets into the business of slicing and dicing public opinion surveys. One unceasing point of dispute each season is questioning the "partisan balance" in election polls -- something that's reached new prominence with the quick popularity of a website purporting to "unskew" polls (and its satirical doppelgänger).

To make this activity more accessible, we present the "party id manipulator." If you are fortunate enough to know the "real" gap between Democrats and Republicans -- or just want to play out different scenarios -- use the slider below to set the partisan gap. Each level of party composition adjusts the results of recent polls, based on their reported party splits and levels of party-line voting.

Thanks to HuffPost pollster for a terrific catalog of polls.

(And if you are truly clairvoyant, please offer stock tips in the comments section.)

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SOURCE: Pollster API, published poll results. GRAPHIC: Erin Eastabrooks, Johnathon Hege and Jon Cohen - The Washington Post. Originially published Oct. 2, 2012.