I’ve said that the Republicans retaining the House would be a huge victory for Trump.
If the Democrats can’t win back the House under these circumstances, then it simply isn’t winnable for them.
The 2006 and 2008 Democrat victories were a backlash against Bush.
I think people are a lot more disastisfied with Trump right now - by far.
The 2010 loss was complacency and low turnout of Democrats mixed with fired up Republicans.
The 2012 loss while Obama won was the product of gerrymandering.
It shows how Democrats could get the majority of votes in a state like Ohio, but that state get the majority of representatives elected to Congress.
Because there are more rural than urban districts across the country, Democrats need to have a lot more total votes to gain a slim majority.