with this trend of the build up in the polls, is there any stopping hillary clinton? >> well, beginning with the debate, the cnn debate in las vegas, and going forward with the escaping possibility of running against joe biden, and of course, the strong performance at the benghazi hearing, but the numbers, and even the folks inside of the clinton campaign say they wish that she had this big of a lead in iowa. the iowa caucuses are tricky, and very difficult to survey, and very difficult to poll. they know that there are a lot of liberal progressives who turn out to the iowa caucuses who like the bernie sanders' message. i was in iowa over the weekend, talking to the iowa democrats, and there are so many people who find bernie sanders' message resonant here, and she is trying to capitalize on the strong last couple of weeks of her campaign, and trying not to squander it.