A patchwork of minimum wage laws is emerging as Democrats push hikes through legislatures and initiatives.
The measure passed by just 77 votes. Now opponents want a hand recount.
Supporters and opponents spent more than $170 per registered voter on a minimum wage measure.
Democrats and labor unions will turn in enough signatures to qualify the measure for the 2014 ballot.
The measure has a huge margin of support, according to polls.
The leading mayoral candidate wants to dramatically raise the minimum wage.
Minnesota Democrats are likely to try to raise the state's minimum wage in next year's legislative session.
The California legislature will likely vote to make the state's minimum wage the highest in the country.