MIAMI — The fight over which voting map should be used for this year’s city of Miami elections has officially reached the U.S. Supreme Court, and a recent filing suggests the case is getting a serious review. Community groups suing the city over allegations of racial gerrymandering have asked the highest court in the land to resolve an urgent issue: Which map the should the city use to hold elections in Districts 1, 2 and 4 on Nov. 7? The community groups asked for an emergency review from U.S. Supreme Court Justice Clarence Thomas, who is assigned to deal with appeals of decisions made by the...