Source: https://fivethirtyeight.com/features/election-update-democrats-are-in-their-best-position-yet-to-retake-the-house/

«If Democrats win the popular vote by “only” 5 to 6 percentage points — still a pretty comfortable margin, but not necessarily enough to make up Republicans’ advantages due to gerrymandering, incumbency and the clustering of Democratic voters in urban districts — they’re only about even-money to win the House. »