Feingold and Wellstone would have ensured Gore win in Wisconsin, Iowa, and Minnesota. But it ended up that Gore won those anyway.
If he went with one of those two he would have lost Florida by 2-3%.
I have a question: The rationale for saying that Lieberman helped in Florida is because he is jewish or because he is conservative? Because if it was the first one, then Feingold is jewish and Wellstone was, so they would have helped in the same way. Of course is a different story if it was because of his coservatism.