that 527s are the ONLY means by which wealthy contributors can influence politics? Seems to me that Verizon gave lots nd lots of money to the Democratic convention last year and hey wow! Surprise! Surprise! Democrats soft-pedaled the idea of punishing telephone companies for warrantless wiretapping! Amazing how that happens!
Obama's campaign depended much less on wealthy contributors than McCain's campaign did, but yeah, about 2/3rds to 3/4ths of his campaign cash came from people making contributions of $250 or more.
I'm aware that the combined campaigns of both sides got up to around a billion dollars this last year. If you think that Democrats are the only ones benefiting from rich peoples' contributions, you're living in a fantasyland.