A fairly interesting site that I remember back from the 2004 election, Fundrace lets you view what people have contributed to major campaigns. Not surprisingly, this has generated a lot of public debate over whether or not this information should be public, but I happen to think it is a good thing. Fundrace draws its information directly from the FEC (Federal Election Commission). All of this information is public; it is just being aggregated here.
Democracy or nosiness? What’s the difference?
It is amazing how many well-known people are politically lukewarm, hedging their bets by donating equal amounts to both sides of the ideological fence.