How do they know?

Here are some random quotes I've heard over the years:

"People are clearly inspired by Barack Obama's message. That's why they're voting for him."

"McCain needs to reach out to conservatives; they won't vote for him otherwise."

"America wants change!"

"It's the economy, stupid."

"No team will sign Barry Bonds because of the court case and the public outrage against him."

I have a simple question: How on earth do commentators, pundits, news anchors, and all else KNOW what Americans are thinking, feeling, and wanting?

What. Did they talk to five people walking by before going on the air to get a feel for public sentiment? Do they look at a poll where a majority of people say one thing and then project the image that 100% of the people feel that way?

As one of the few people walking on this blessed earth with a brain, I tire of these tactics. I tire of seeing the effects of these tactics on John Q. Public -- around water coolers, at supermarkets, etc. Average folks tend to parrot what they're verbally fed.

I wish intelligent analysis was considered profitable by the MEDIA.