A very important case has been taken up by the Supreme Court. Rural Texas folks have petitioned that urban areas have more people, but rural areas have a higher percentage of actual voters. So gerrymanding districts based on population is unfair, and it should be based on actual voters who participated in the system. Reapportionment will be drastically changed if the Supremes mandate voter rolls and not census data on apportionment. The Roberts Court has taken this up, and it keep Congress solidly Republican if the Supreme Court changes the standard from population base census data to actual voter participation. Rural areas will grow in power, and urban areas will lose power as a general rule based on percentage of voters being higher in rural areas. This case is generally under the radar, but could impact the House of Representatives more than any other factor over the next twenty years. We will see....they granted Cert.
http://www.usatoday.com/story/news/nation/2015/05/26/supreme-court-voting-rights/27800607/
http://www.usatoday.com/story/news/nation/2015/05/26/supreme-court-voting-rights/27800607/