Proposition 37 in California would require all foods to contain labels indicating that they were genetically modified.
According to the Los Angeles Times, those in opposition to the proposition received $13 million last week in addition to the $12 million already collected throughout the year to fight the label requirement. Proponents of Prop 37 haven't been as fortunate, having raised only $3 million thus far.
The biotech giant and maker of Round-Up ready herbicides, Monsanto, contributed $4.2 million to the opposition campaign.
If California were to pass Prop 37, it would be the first state to require GMO labeling on crops or foods that have been processed with genetically engineered ingredients.
What The People Want With GMO Labels
The Mellman Group's study, "Support For Mandatory Labeling Of Genetically Engineered Foods Is Nearly Unanimous," showed Americans support making the labels mandatory.
The study showed that 90 percent of voters supported requiring labels on foods that have been genetically engineered or contain genetically engineered ingredients.