This is a fantastic graphic by cornucopia.org. It amazes me how the level of funding corporations spend to push their political agenda. Profits at all moral costs. Next time you want to decide between 2 brands of food and truth in advertising, here is how these brands spent their’s money for/against GMO labeling Prop 37! Keep in mind, Kashi got outed for using GMO in their products already.
Put another way, here is another nice graphic from MapLight.
Here is yet another interactive graphic that has much more detail.