Complex sentence: New Jersey's 7th and 12th House districts were redistricted after the 2000 census by a bipartisan panel, and by consensus the Democratic and Republican parties agreed to trade areas in both districts to make them safer for their respective incumbents.
Split into simpler sentences: New Jersey's 7th and 12th United States House districts were redistricted after the 2000 census by a bipartisan panel. By consensus of the panel the Democratic and Republican parties agreed to trade areas in the two districts to make them safer for their respective incumbents.