2000 ended up being decided by the Florida state government and federal supreme court so it's kinda happened. I think the deciding factor is if the democrats are willing to go along or not, and considering how much they keep banging on about needing a "strong republican party" and "national unity", there is no reason to think they would actually put up a fight in a 2000-style (or similar) situation.

Here's hoping more assassins come out of the woodwork though!