Are most americans for or against health care reform?

Why do politicians and commentators lie so much?
I keep hearing commentators and politicians so that "most americans", or that "an overwhelming majority of americans", or that a "significant majority of americans" are against or opposed to the health care reform legilations.
So I thought I'd try to find out if thats true, and hears a Gallup poll from January 12th
http://www.gallup.com/poll/125030/Healthcare-Bill-Support-Ticks-Up-Public-Divided.aspx
According to the Gallup poll 49% of Americans are FOR or Leaning For passing the current health care package, and 46% are Against or Leaning Against passage of the health care package.

I'm no math wizard, but it doesn't seem to me that 49% For and 46% Against is really an overwhelming, significant or any kind of a majority Against anything?

So I guess that whenever politicians and commentators say that an "overwhelming" majority of Americans support something, they really mean an overwhelming majority of "the people who think like I do", and no one else's opinion really matters.