Expert sees partisanship in Pennsylvania congressional maps

Written by Mark Scolforo/Associated Press | Dec 11, 2017 6:22 PM

Pennsylvania's 7th Congressional District is often considered the poster child of gerrymandering. The district cuts through five counties and a number of municipalities including Chester, Upper Darby and Glenolden. On the map, the district looks like an alien character from the classic arcade game Space Invaders. (Map Source)

(Harrisburg) -- A political scientist serving as an expert for voters challenging Pennsylvania's congressional districts is telling a judge that partisan interests by Republicans appear to be the predominant factor in producing a map that has disproportionately favored GOP candidates.

University of Michigan professor Jowei Chen testified Monday as a Commonwealth Court hearing got underway over the 2011 maps.

Chen says none of the hundreds of computer simulations he's run has produced a map so favorable to Republicans.

In recent elections, Republicans have had a durable 13-5 advantage among the congressional delegation.

This week's hearing will create a record for the state Supreme Court to use in deciding the dispute.

The lawsuit by a group of voters says the congressional district map violates the state constitution because it's too partisan.

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