His latest poll suggests that a Clinton nomination could be dire news for the Dems:

The online survey of 9,718 likely voters nationwide showed that 50% said Clinton would never get their presidential vote. This is up from 46% who said they could never vote for Clinton in a Zogby International telephone survey conducted in early March. Older voters are most resistant to Clinton – 59% of those age 65 and older said they would never vote for the New York senator, but she is much more acceptable to younger voters: 42% of those age 18–29 said they would never vote for Clinton for President.

Obama, Huckabee and Richardson are the least polarizing candidates in the poll.

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