Kyle Kondik, an elections analyst with the University of Virginia’s Center for Politics, also projected that Republicans could see most of the gains under the new lines. GOP officials will control the map-drawing process in Texas, Florida, and North Carolina, and will be favored to gain in Montana and Oregon as well, for an edge in six of the seven new seats being drawn, he said. “On balance, Republicans should benefit from these changes — not necessarily by doing better in the states losing seats, but rather by potentially picking up the lion’s share of the new seats in the states gaining dis...