If a Democrat wins the White House, the Bush Space Plan is toast.

I suppose. Although to the extent that it doesn't involve budget
increases, it might not really be something the White House cares about.

Except, I bet, such a result would oddly mean more money for NASA

I doubt it. The Democrats have always (in recent times, anyway)
opposed more money for NASA. During the Clinton years, NASA funding
was flat (slightly declining, I think).

the Dems say they want to complete, and continue to support, the Bill
Clinton International Space Station.

Do you mean the Ronald Reagan Space Station?