Karl Rove:

The fourth and biggest reason why Mrs. Clinton won two nights ago is that, while Mr. Obama can draw on the deep doubts of many Democrats about Mrs. Clinton, he can't close out the argument. Mr. Obama is an inspiring figure playing a historical role, but that's not enough to push aside the former First Lady and senator from New York. She's an historic figure, too. When it comes to making the case against Mrs. Clinton, Mr. Obama comes across as a vitamin-starved Adlai Stevenson. His rhetoric, while eloquent and moving at times, has been too often light as air.