Truly, it depends on how you measure "great."
O'Bama and Biden have embarked on a campaign to destroy America, and they are almost there. November will go a long way toward stopping them.
Just ponder the following things: They have INVITED more than 20 million third world wretches into our country, with the promise of free health care, free food, free education, and so on. Their follow-up campaign, as clearly stated by K. Harris, is "a path to citizenship." In a nation that is evenly divided politically this is a blatant attempt to "fix" every national election for at least the next generation. After that, it will be too late. It is almost too late now.
Both O'Bama and Biden are "great" in that context. That is why they have to be stopped. It makes no difference who the Democrat nominee is this November. The party has been taken over by Leftist radicals.