Proponents of creating a universal health care system in Colorado were clobbered by opponents, not just at the polls, but in terms of fundraising as well.

Opponents, established as Coloradans for Coloradans, raised more than $4 million over the course of the election. The coalition must not have been too worried toward the end of the race, as it only raised $55 between Oct. 27 and Nov. 30.

Meanwhile, proponents, operating as ColoradoCare Yes, raised just under $500,000 since the group began fundraising in April 2015. The issue committee actually ended about $5,200 in debt, and pulled in only $25,000 in the last fundraising period.

Amendment 69 was overwhelmingly defeated by Colorado voters last month, with nearly 79 percent of the electorate rejecting the measure.

The $25 billion state tax increase would have created a universal health care system in Colorado, in which a 21-member board would have managed the ambitious program. It would have operated as a zero-deductible plan with co-pays.

Taxpayers would have seen a 10 percent payroll tax to fund the expansive experiment, in which 3.33 percent would have come out of an employee’s paycheck, and the remaining 6.67 percent would have been paid by employers based on the employer’s total payroll.

The proposal was a tough one for supporters to advance, with even left-leaning groups coming out against the measure, including ProgressNow Colorado and abortion-rights advocates. ColoradoCare was boosted, however, by an endorsement from Sen. Bernie Sanders of Vermont.

Proponents were buoyed largely by individual donations from wealthy donors with strong ties to universal health care movements, though some groups helped financially, including the National Nurses United union.

Opponents were largely kept afloat by insurance and pharmaceutical companies, health care providers and the business community. Anthem Inc., for example, contributed $1 million to fight the effort. Others who came out against the measure included accountants and banks.

The Thursday filing of financials represents the last report due by issue committees for the 2016 election cycle.