I believe Trump won something like 39 of 50 states as well.

What the Democratic party has to understand, that winning a district in Philadelphia by 85% is no different from winning it by 51%.

The Democratic vote is extremely inefficient. 

I have posted this before, when Obama was asked by some young party workers in Chicago what was the most important thing they could do to advance Democratic policies - he answered "Move to North Dakota, or Wyoming"

He knew exactly what he was talking about. The Democratic voters continue to pack themselves ever more tightly into a select group of large cites. 10 - 12 at most, in around 8 - 10 states.

At some point, pure geography cannot be ignored, and as one academic pointed out, it is now becoming almost impossible to NOT draw "gerrymandered" districts in the USA.

It is becoming so "bad" that the concept of "RINO's" is now understood to mean that many moderate people are entering politics in some states as Republicans - a Dem can't win.