She brought up the race issue again and again
How is race not an issue. It always was and still is. 90% of black voters vote for Obama. Just think about it. She has about 60% of the white votes on average. So in states where there are a large % of black voters, he wins, plain and simple.
She engaged in negative attacks
That’s the nature of the beast. Everybody does it, even Obama.
she refuses to concede and divides the party until the very bitter end, risking a McCain victory in November
You’re giving her way too much credit. Obama can’t win over the blue collar, Reagan democrats. He tried many times but still not successful. Those are the voters in swing states and they are probably the majority of the 50+% that will not vote for Obama.