527 contributors: where the millionaires are.
Check out this list. How many conservative contributors can you find? Organizations contributing can be found here. Look at it closely.
Now, check out this one. This is kind of fun to click through on, to check out assorted interconnections. Swift Boat Veterans isn't big enough to even show here. How many conservative organizations can you find? Club For Growth is the one that sticks out to me.
I think it's blindingly obvious which side of the aisle is currently throwing the most weight and money around in the 527 department. Small wonder campaign finance reform was so attractive to Democrats.