If you want your own copy in your Google Docs account - there's a link at the top of the full published version. With your own copy, you can change who you think will win each state to see the impact on the electoral vote.... quite fun.
Summary - according to CNN as of Sept 26, 2008:
|See the full version...
The initial data comes from CNN's Political Site - just after this first presidential debate which took place tonight between Barack Obama and John McCain. There, they have an electoral vote map - showing which states are either strong or leaning to one candidate or the other, or undecided. On their map, you can click the state to change the result.