Pa. redistricting case may set path for U.S. on role of politics

Today, the U.S. Supreme Court will hear arguments in a Pennsylvania congressional redistricting case, which will determine how big a role party politics can play in the drawing of voting districts. Legal experts say that it ranks among the most important cases the court has considered in the realm of politics in the last half-century - and that its decision will shape the electoral process for decades.

Update: Court struggles on definition of gerrymandering