Buying influence: A closer look at spending in ballot measure campaigns

Nearly $400 million was pumped into the 11 ballot measures California voters considered on Tuesday.

Through Oct. 20, combatants involved in the measures drawing the most money - Propositions 30, 32, 37 and 38 - had spent the bulk of it on advertising, either by paying a media broker to buy time on television, radio and the Internet or by paying a consultant to design, print and distribute mailed literature.

Campaign strategists, pollsters and communication specialists, many of them based near the Capitol in Sacramento, also benefited from the work created by this year's ballot measures.

In most cases, the side that spent the most money won, but that wasn't true every time.

Here's a look at how some of the wealthiest campaigns spent money through Oct. 20, and which companies got the most business from them.