The Democratic and Republican National Conventions are nearly upon us, and in and amidst the rampant VP speculation and who-invited-who gossip it bears repeating that conventions are a major vehicle for corporations and lobbyists to pour cash into lavish parties for political VIPs. Campaign contributions may have a few limits on them, but when it comes to these schmooze-fests, the sky's the limit. Champagne waterfalls all around.