Because, we like it in writing.
If you have a keen understanding of statistics, the polls can be very helpful. Both Parties have a people with a keen understanding of statistics, so they are very useful in election strategies.
Here are the realities of this election:
McCain has to get a big increase (>5%) in turn out in white voters AND he has do do as well among white voters as Bush did in 2004. There will likely be an increase in white voters, but it's doubtful that McCAin will do as well among white voters as Bush did.
Obama has to prevent the above from happening while at the same time getting out an extremely strong turn out among African voters. This is very likely.
McCain's best hope is to turn out large numbers of white voters who'll vote against Obama based on race. This will most likely be offset by young white voters and people who are disillusioned by the Republicans.
If the changes in the White vote are a wash and Obama succeeds in getting out the Black vote, The Carolinas, Georgia, Alabama, Mississippi and Louisiana (all of which have a Black population between 25-36%) will all go to Obama. That will just be the start of an Obama landslide.
I do believe that no matter what, Texas, Arizona and Alaska will go to McCain. But not much more.
Demographically, an even smaller change in the voting pattern of womwn voters (who are the majority) towards the Dems will cause an Obama victory. The male vote will likely not change much.
There are about 6-7 likely demographic changes from the 2004 election all of which point to either and Obama victory or landslide. There is only one, which is fairly unlikely, that would cause a McCain victory.