our regular court watcher, marcia coyle will join lisa desjardins to breakdown the arguments. the case centers on a redistricting map in wisconsin, and that's where special correspondent jeff greenfield begins. >> reporter: the 2012 elections brought good news to wisconsin democrats. president obama carried the state for a second time, and the party won 174,000 more votes for the state assembly than republicans. but that did not mean democrats would control the state assembly. in fact, republicans wound up with 60 of the 99 seats. 61% of the seats after winning only 49% of the votes. was that because so many democrats were clustered in urban districts in madison and milwaukee? bill whitford didn't think so. the retired law professor and lifelong democrat believed the way the district lines were drawn had effectively rigged the election. >> the value that's clearly at stake is that majorities should rule. democrats got a majority in the statewide assembly vote and they got less than 40% of the seats in the assembly. i mean that made it very clear that we had no chance. >> repor