But partisan gerrymandering "is like cancer: Sometimes the signs are obvious, but sometimes no signs can be seen," according to Bernard Grofman and Jonathan Cervas, two University of California-Irvine political science professors who specialize in redistricting issues.

For the full story, please visit https://www.usnews.com/news/politics/articles/2018-02-12/pennsylvania-gerrymandering-fight-just-the-start-of-a-wider-war.