Colorado has become the fifth state to approve assisted suicide.

Terminally ill people with six months or less left to live, as determined by their doctor, will be allowed to buy medicine to kill themselves thanks to a vote Tuesday, NBC 9 News reported.

With more than 65 percent of the votes counted, Colorado voters were giving the proposal the nod by a margin of 65 percent to 34 percent, according to the Denver Post.

But 9NEWS is projecting that Proposition 106 will pass.

The measure was modeled after Oregon’s “Death with Dignity” law that’s been in place for the last two decades. Five states in the U.S. have laws like this.

“This is a historic day for all Coloradans, and an especially tremendous victory for terminally ill adults who worry about horrific suffering in their final days,” Compassion & Choices Action Network President Barbara Coombs Lee said in a statement. “We are delighted the significant investment paid off and are proud to have lent the expertise and resources to empower the voters of Colorado. We congratulate Colorado for becoming the sixth state where more people have peace of mind at the end of life and fewer suffer unnecessarily.”

Compassion and Choices, a national group based in Denver, backed the measure. The opposition in Colorado was primarily financed by Roman Catholic organizations.

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