Opper - One man's "magic" is another man's boredom.

It's only natural that Democratic primary supporters of Obama (who skew more liberal and younger than the Independent voters and others that must be convinced for Obama to win in November) would be underwhelmed by messages meant, now, more for others.

Much of the "magic" factor - the exciting big rallies and speeches and bold strokes - includes things that more moderate and less political voters are weary of: they've seen flashes in the pan over the years and charisma not only doesn't win the day with them, but can be a turn-off (that's part of what the McCain camp is trying to reinforce with its "celebrity" ad series).

It's just a very big country with demographic and social groups that barely speak to each other, much less listen.

And so the price of winning over newcomers is often not giving the long time supporters the adrenaline rush they crave. Not that the convention won't include some of that for ya, but even much of that show will be very intentionally targeted to whole blocs of voters that are moved by things others of us might not find so moving.