The group ColoradoCareYes turned in 156,000 signatures to the Secretary of State, delivering them via ambulance. That's more than 50,000 above the threshold needed to make the ballot. If the state finds they have enough valid signatures, the measure will appear be on the ballot in November 2016.
Journalist T.R. Reid, a spokesman for the group, says the campaign is prepared to face stiff opposition.
“Coloradans are going to pay less if we pass this," he said. "The insurance companies don’t people paying them less, so they’re going to fight us."
If voters approve the measure, the program would provide Coloradans with lifetime coverage, funded by a tax on income.
Critics say it’s too expensive and will lead health care shortages.