I think 85-90% already have made up their mind unless their candidate does a perp walk. They’re all fighting over 10% “undecided.”
I think a lot of primary voters have made up their minds, but most of the people polled in this type of poll aren’t primary voters. A registered voters poll is going to include a lot of people who can tell you the minute details of Britney’s or Lindsay’s latest DUI, but can’t name any of the candidates other than the top two or three. That’s why the “name” candidates (Clinton, Giuliani, McCain) poll so high.
This poll tells us next to nothing about what’s going to happen in January when primary voters go to the polls. But in the meantime it makes a nice soundbite for Hillary’s campaign, which explains the wording of the article’s title.