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Denver Amendment 65, which would theoretically stop the influence of corporate spending in political campaigns, was projected to win by The Denver Post, netting more than two-thirds of the votes.
But the measure won't have legal standing anyway, even if it passes.
Amendment 65 was ahead 73 percent to 27 percent with 43 percent of precincts reporting.
"I think Colorado voters said loud and clear that they want their elected leaders to take action ... ," said Elena Nunez, executive director of Colorado Common Cause. "The decisive vote margin demonstrates this is not a partisan issue."
The ballot measure instructs Colorado's congressional delegation to propose and support an amendment to the U.S. Constitution that would reverse the 2010 Supreme Court Citizens United decision that held that corporations and unions could spend unlimited amounts on political campaigns.
Read the full story at The Denver Post's website.