Look how much damage the Democratic Party did to itself from 1992-2000 by overestimating Bill Clinton's appeal. They never realized that the nation was sick and tired of him by the time the 2000 election rolled around. And even since he left office, every single Democratic candidate that Bill Clinton publicly supported lost against a GOP opponent -- including California governor Gray Davis, who suffered the incredible ignominy of being tossed out of office in a recall election.
My guess is that Ralph Nader would have been a stronger candidate in 2000 if Clinton were the Democratic candidate instead of Gore, because at least Gore had his idiotic "Earth in the Balance" persona to enhance his left-wing credentials.