California voters have approved a measure requiring all eggs sold in the state to come from cage-free hens by 2022.
Proposition 12 is leading Tuesday with 59 percent of the vote with more than 3.7 million ballots counted.
The measure also sets new minimum requirements on the size of cages or pens that house breeding pigs and calves raised for veal. It also bans the sale of veal, pork and eggs in California from farms that don’t comply.
Supporters say the measure is a step toward more humane farming practices.
Opponents say it doesn’t go far enough.
Proposition 12 builds on Proposition 2, which passed in 2008.
That measure banned California farmers from keeping the same animals in tiny cages but lacked specific size requirements.