Politicians are reshaping congressional voting districts — a task typically done just once a decade, after each census — in an effort to give their parties' candidates an edge in next year's elections. The stakes are high because Democrats need to gain just three seats to wrest control of the House from Republicans, who are trying to buck a historical pattern of the president's party losing seats in midterm elections.
The redistricting efforts have triggered protests, petition drives, ad campaigns and lawsuits.
View details below on states in the redistricting battle and on this AP map. The embed code for publishing the map can be found at the end of the guide.