Oh you missed the daddy of all electoral vote tracking sites:
http://www.electoral-vote.com/evp2008/Pres/Maps/Sep18.html
It has historical maps (back to at least the last two elections) and in depth analysis of what is going on in the polls and coverage of what is going on in house and senate races. I like to think it is relatively impartial although some of the commentary may be slightly left of center. Their algorithm is well weighted and current. If you are interested in the travesty that is the electoral college it is for you.
It is the mathhammer of US politics.