People need to realize that. Obama can lose a battleground or even two and still WIN.
We cannot lose ONE of them.
That's completely inaccurate. In 2000 Bush won the election by winning: NH, VA, NC, OH, FL, CO, MO and NV. He lost MI, WI, MN, PA, NM and IA. So that's six current (2008) battleground states (off the top of my head) that then Gov. Bush lost, yet he's finishing up his second term.
In 2004 Bush lost NH, but won IA and NM. All others remained the same, so his electoral total increased to 286.
As you can see, from 2000 to 2004 the electoral map was pretty stable. I expect similar stability this time around.