This poll makes no sense. In one breath they are saying that Kerry/Edwards would beat Bush/Cheney and in the next breath they say that 48% expect Bush to win the presidency! Say What? Seebs.
And it also runs counter to other polls which show Bush's approval rating between 50% and 55%.
As said above, without knowing who was polled, when they were polled, and whether or not they were adults, registered voters, or likely voters, this poll has no legitimacy.
how you word the exact question to the person is important.
CBS can tell you what their results are but can crib the questions somewhat.