While I agree, especially after the New Hampshire debacle, that
polls shouldn't quite be taken as gospel, it is only fair to point
out that overall, polls have been pretty reliable so far. They
correctly predicted Huckabee and Obama would win Iowa. In New
Hampshire, they were pretty dead on on the Republican side as far
as predicting McCain's margin of victory.
It's pretty clear to me that what happened on the Democratic
side is that they simply couldn't take into account late-breaking
developments the day before the primary. The surprise was
compounded because male pundits--and I suppose even female
Republican pundits--underestimated the effect that Clinton's
emotional incident would have on older Democratic women.
So, I'll still watch polls closely because they are the best
we've got and they have been pretty reliable most of the time, but
I also know now to be a bit more careful, especially if big news
breaks right before voting starts that wasn't reflected in the
polls.