Arianna spoke with MSNBC's Alex Witt on Sunday morning about her book "Third World America," as the chances Tea Party candidates like Christine O'Donnell and Joe Miller have in the upcoming midterm elections.
The anger that many Americans feel "is producing candidates who are not electable, and Christine O'Donnell is one of them," Arianna said. "And unfortunately whoever advised her to do that new ad about 'I am not a witch' didn't do her any favors."
"The main result of the Tea Party in the elections is going to be in the turnout -- who is going to turn out is going to determine who controls the House and maybe the Senate. Of course in some cases, like in the case of Christine O'Donnell, or maybe in Nevada, in the case of Sharron Angle, the Tea Party candidate may lose Republicans the race."
Independents, who are largely disillusioned with the political establishment, are the key bloc, Arianna says.