Proponent says initiative should apply prospectively, not retroactively

Jun 1, 2026

Staff explained the constitutional default effective date if a measure omits an effective date; the proponent told the panel she does not intend retroactive application and prefers the measure apply on or after the effective date.

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Staff explained that when a majority of voters approve an initiative, the default effective date under Colorado law is the date of official declaration of the vote and the governor’s proclamation unless the measure specifies otherwise. They asked whether that default effective date satisfied the proponent’s intent.

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