And yet Democrats failed to knock off even a single one of the three vulnerable GOP House incumbents in CA.
That will wait for 2022, after the 2020 census and redistricting.
This makes no sense; California is not a gerrymandered state, and there are still individual districts that are close even when the House as a whole is a bit of a reach.
Anyway, the real reason the Democrats didn't make any House gains in California (barring recount surprises) is because the 2014 wave didn't really happen there.