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Outside analyst presents five draft maps and simulation testing; staff to post maps for comment
Summary
An outside expert presented five zero-population-deviation maps described as compliant with Proposition 4 standards and explained simulation and partisan-symmetry testing. The committee agreed to post proposed maps and accept public comment in the court-ordered window.
SALT LAKE CITY — The Legislative Redistricting Committee on Sept. 22 heard a technical presentation and demonstration of proposed maps from an outside analyst retained to test compliance with Proposition 4 and court guidance. Sean Trendy, an elections analyst and consultant, described how map simulations, compactness scores and measures of partisan symmetry were used to evaluate and compare options.
"All of these maps are zeroed out, so they're equally populated," Trendy told the committee after walking members through five draft maps labeled A through E. He said the maps prioritize Proposition 4 requirements in order: federal constitutional and Voting Rights Act compliance and equal population; minimizing municipal splits (with municipal boundaries prioritized over counties where conflicts exist); compactness and…
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