CNN
Cnn: Election Center 2008
A great center for information on the election of 2008, this includes information on the candidates, the path to the presidency, money raised and spent by candidates and the important issues at stake.
Other
Opensecrets.org: 2008 Presidential Election Fundraising
Find out all the campaign finance information at this thoroughly comprehensive site. If you want to know who's giving what, how much each candidate is getting, and where the money is coming from, this is the place to look.