What does a Trump+3 map even look like in the electoral college?

[cherry mandarin]

I think the aim of the exercise was to somehow find a way for Trump to win the PV by 3, while still losing the EC anyway.

I think it's totally reasonable to expect the EC gap to favour Biden over Trump this time around, since many groups have shifted to make the latter's winning coalition less "vote-efficient". However, it still feels like a stretch (at best) to see how Trump can fail to make it to 270 if he's carrying the NPV by 3, as that would require the tipping-point to trend at least 6.8 points to the left in just four years.