Business groups promised to raise $3 million to fight three labor-related ballot measures in the fall as part of an agreement with unions. As part of the agreement, union leaders say they will cancel a vote on four ballot measures they proposed. Kate Horle of the Denver Metro Chamber of Commerce said Thursday the deal followed late night negotiations. Union and business leaders announced details of the agreement during a Thursday morning news conference. The groups will focus on defeating Amendment 47, which would make Colorado a right-to-work state. Labor groups put four measures on the ballot that worry business groups after those groups put three proposals on the ballot that upset unions. It's too late to remove the proposals from the ballot, but sponsors have until 5 p.m. to request that votes on them not be counted.