These polls don't mean much one way or another.
First, they are polls of registered voters, not LIKELY voters, meaning that a lot of respondents won't even vote.
Second, Nader won't be on the ballot in many states (or so I hear), whereas in 2000, he was on the ballot in 43.
Third, these polls aren't broken down by state so they can deviate wildly from state by state returns, which are what control the electoral college.
Finally, and most importantly, it is EIGHT EFFIN' MONTHS until the election. Either one of these guys could be ahead by a huge margin come November.
Instead of constant polling, journalists should spend more time reporting on the issues.