Analysis Based on Nicholas Stephanopoulos's Research Finds Partisan Gerrymandering Has Benefited the GOP

Partisan Gerrymandering Has Benefited the GOP, Analysis Shows

The 2016 presidential contest was awash with charges that the fix was in: Republican Donald Trump repeatedly claimed that the election was rigged against him, while Democrats have accused the Russians of stacking the odds in Trump's favor.

Less attention was paid to manipulation that occurred not during the presidential race, but before it — in the drawing of lines for hundreds of U.S. and state legislative seats. The result, according to an Associated Press analysis: Republicans had a real advantage.

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The AP's analysis was based on a formula developed by University of Chicago law professor Nick Stephanopoulos and Eric McGhee, a researcher at the nonpartisan Public Policy Institute of California. Their mathematical model was cited last fall as "corroborative evidence" by a federal appeals court panel that struck down Wisconsin's state Assembly districts as an intentional partisan gerrymander in violation of Democratic voters' rights to representation.

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"There are significantly more pro-Republican maps at the moment than there are pro-Democratic maps," Stephanopoulos said. "To me, the most important driver of that fact is that Republicans controlled redistricting in a whole lot more states than Democrats" after the last census.

Read more at NBC News