Nate Silver got one thing wrong: Ohio wasn't the tipping point state--Colorado was.

The tipping point state is the state that puts the winner over the top. Not in time, but in closeness of the vote. You essentially count your safest states first--Hawaii, Vermont, D.C., New York etc until you get to 270. Everything closer than the tipping point state is padding for the lead.

Per the WaPo, the closest states were:

1. Florida: 0.6 percent (Obama 49.9, Romney 49.3.)

2. Ohio: 1.9 percent (Obama 50.1, Romney 48.2)

3. North Carolina: 2.2 percent (Romney 50.6, Obama 48.4)

4. Virginia (99% reporting): 3.0 percent (Obama 50.8, Romney 47.8)

5. Colorado: 4.7 percent (Obama 51.2, Romney 46.5)

6. Pennsylvania (99% reporting): 5.2 percent (Obama 52, Romney 46.8)

7. Iowa: 5.6 percent (Obama 52.1, Romney 46.5)

8. New Hampshire (99% reporting): 5.8 percent (Obama 52.2, Romney 46.4)

9. Nevada (99% reporting): 6.6 percent (Obama 52.3, Romney 45.7)

10. Wisconsin: 6.7 percent (Obama 52.8, Romney 46.1

The Obama states not close enough to make this list awarded him 217 Electoral Votes (Hawaii through Michigan).

Wisconsin brings the total to 227, Nevada makes 233, New Hampshire makes it 237, Iowa makes it 243, Pennsylvania (closer than many battleground states) made it 263.

And the state that put him over the top? Colorado, with 9 Electoral Votes, put him at 272. Virginia made it 285.

Ohio and Florida were the two narrowest wins. Conversely, Silver's model ranked the states in likelihood of being the tipping point:

Ohio: 49.8%
Virginia: 12.3%
Nevada: 9.9%
Iowa: 6.6%
Colorado: 6.4%

What does this tell us? That Ohio wound up being a heck of a lot closer than the public polling suggested. Similarly, Pennsylvania was much closer than the public polls suggested while Wisconsin, Nevada, Colorado, New Hampshire and even Virginia saw Obama with wider leads than projected.