A Wisconsin redistricting case centers on voter 'islands' and could lead to new maps

Newly elected Wisconsin Supreme Court Justice Janet Protasiewicz has refused Republican calls to recuse herself from a redistricting case for calling the state's legislative maps "rigged" while campaigning. (Morry Gash/AP)

MILWAUKEE — The Wisconsin Supreme Court hears arguments Tuesday in a case that could toss what critics say are the state's lopsided legislative maps.

Statewide elections in Wisconsin are often really close. But Republicans have a two-thirds supermajority in the state Senate, and nearly so in the state Assembly.