I hope you're right.
You need to remember who the audience for this is...
the voter who is usually not paying attention to politics, but wants a president who is "presidential"...
This is a very effective summary showing how extreme these people are...When Clinton portrayed Republicans as "right-wing extremists" that was very effective with this group. He used OKC and that tag to defeat Dole in 96.
The Dems have gone nuts...and letting the world see them doing it on TV is very effective.
You have to also remember that as close as the polls look on the election, the President's LIKEABILITY numbers have stayed in the 60s....Rove et. al. are going to drum in this "extremist" label to get late-deciders to fall our way on the "likeability" factor...