Before this argument even begins I suggest reading
this informative article. Before you complain about the source, it is well-cited.
Gore could have made up those votes by demanding a recount of disqualified paper and pencil ballots (enough to win, most likely). He could have demanded a recount of the very confusing butterfly ballots that had people voting for candidates they had zero interest in. He could have appealed to the 12% of Florida Democrats that ended up voting for Bush. He didn't. End of story. Nader was a footnote in Gore's defeat in Florida, but I understand why he makes an appealing scapegoat.