Our 2018 House interactive map is live, populated with initial House ratings from The Cook Political Report. Those ratings show 205 safe seats for Republicans, 173 for Democrats. The remaining 57 seats are seen at varying levels of competitiveness. At this early date, these are the 57 seats most likely to determine the battle for 218 - the number needed for control.
The GOP currently controls the House, with 238 seats to the Democrats 193. Four seats are vacant, three of which were previously held by Republicans now part of Donald Trump's administration. The one open Democratic seat, in California, became vacant when Xavier Becerra became California Attorney General. All four seats will be filled by special election in the months ahead. Only one, for Georgia's 6th congressional district, has some prospect of being competitive.