"Please Ralph, Not This Year"

Mother Jones has this article discussing why the author, who voted for Ralph in 2000, will not be voting for Ralph in 2004. Some of the logic doesn't really make sense though. For example,

"In 2000, I supported Ralph Nader's bid for the presidency. This year, I'm not. Here's why: *** 2004 is not 2000. Neither John Kerry nor John Edwards are pale imitations of Bush. Even Nader concedes this point."

So.... in 2000 the author supported Nader when Gore was the alternative to Bush. Does that mean that Gore was a "pale imitation" of Bush and therefore it was good to support Nader? Am I missing something, or isn't Gore considered plenty liberal?

So much more to say, so little time to say it in... ... ...