HERE is a very interesting map of the projected outcome of all of the House races for this November from CQ Politics. It is inteactive, too, so that one can click on the map and see the odds of winning along with who is running and a bit of data about the race.
As we all know, however, most of the seats  are SAFE in that the incumbent will undoubtedly win the election due to gerrymandering, popularity and a large war chest. The light blue and light red colors indicate a bit of a fight for the incumbent. Only the yellow districts are considered toss-ups. Sadly that number is only 19.
Thus, if CQ is correct, only 19 seats may change hands which bodes well for Democrats who were supposed to lose the House this fall.