At this point, what difference does it make?
Unfortunately, it makes a big difference.
1) Hillary is a lock for the democrat nomination.
2) Left wing voters are thus free to influence the GOP nomination
3) The left has every reason to favor Bush over any other GOP candidate
4) Expect left wing voters to re-register as republicans and vote for Bush. In open primary states, they won't even have to re-register.
This is a disaster.