I wonder how many electoral votes he would actually lose for the Republicans. I think he can screw up about a third of the red states for Republicans - certainly have some effect on Arkansas/Louisiana to SC/Georgia.
I don't think he'll have as much of an influence as Perot. A) Republicans don't want Hillary. Hell many Democrats don't want Hillary. B) He's batshit crazy, whereas Perot actually had decent ideas.
No idea if he'll have a Nadar 2000 impact in swing states.
The electoral map is not exactly in favor of Republicans these days. Flipping one or two states and putting the thumb on the scale in some swing states would seal the deal.