SEATTLE — Both sides are intensifying their fight over a statewide initiative that mandates the labeling of genetically engineered foods, rolling out the first television spots Monday in a campaign expected to cost millions of dollars.Money is pouring in from many of the same donors who lined up on opposite sides of a similar food labeling measure that failed in California last year.Opponents of Initiative 522 have so far raised $12.1 million, with $4.8 million from Monsanto and $3.4 million from DuPont Pioneer, according to the latest reports filed with the Washington state Public Disclosure Commission. Both companies were top donors in the effort to defeat California’s Proposition 37.The Yes on 522 campaign has raised $3.4 million, with nearly $1 million from Dr. Bronner Magic Soaps. Other top donors include the Organic Consumers Fund and Mercola Health Resources.The measure before Washington voters Nov. 5 would require food and seeds produced entirely or partly through genetic engineering and sold in Washington grocery stores or other retail outlets to be labeled as such. For example, processed foods such as chips, cold cereal and soda drinks containing genetically modified ingredients would require a label. Food sold in restaurants, as well as meat and dairy products are exempt, among others.