(From AP News)
The justices are hearing arguments Wednesday in an appeal filed by Republicans in Maryland. They complain that Democrats who controlled the state government in 2011 drew a congressional district for the express purpose of ousting the Republican incumbent and replacing him with a Democrat.
In Wisconsin, Democrats are challenging legislative districts drawn by Republicans statewide. Those districts gave Republicans a huge majority in a state that otherwise is closely divided between the parties.
The Supreme Court has never struck down districts for being too partisan.
A decision in favor of opponents of partisan gerrymandering could cut into the political power of the dominant party in states in which one party controls the state government.