Exit Polls: Bad yesterday; Good Today!

So the biggest inside-baseball story of the election was that the exit polls proved to be complete and utter crap.
So today, what perennial feature is in all the MSM outlets? Why, demographic stories based on those very same exit polls, of course!
Could somebody explain to me why, when the exit polls couldn’t accurately predict a simple question like “will Kerry or Bush win”, we should believe them when they say “Although seven in 10 voters were worried about another major attack on U.S. soil, a majority nonetheless felt the nation was safer than four years ago”?