There is this..
not 100% current but..
http://www.opensecrets.org/pres08/index.asp
After nine months of fundraising, the candidates for president in 2008 have already raised about $420 million. This presidential money chase seems to be on track to collect an unprecedented $1 billion total. By some predictions, the eventual nominees will need to raise $500 million apiece to compete—a record sum. To find out where all this money is coming from, explore the options to the left. Year-end reports are due to the Federal Election Commission by Jan. 31.
Thanks ,looks like no matter who get the Republican nod they will need some deep pockets to catch up with Hillary or Obama. Another reason why Mccain will have to turn right to get support.