Coloradans for Responsible Reform plans to spend most of it on television ads that will run after Labor Day.
The campaign manager is Rick Reiter, who led the campaign to pass Referendum C in 2005.
The measures are Proposition 101, which reduces automobile and telecommunications taxes, Amendment 60, which cancels voter authorized tax-limit overrides, and Amendment 61, which limits municipal borrowing and bars state debt.
Reiter says they will lead to a “voter approved recession.”
Proposal backers say opponents are businesses and groups that benefit from government spending. They’ve raised a little over $12,000.