The Colorado Sun: A bipartisan effort to clarify how much money political nonprofits can spend supporting or opposing Colorado ballot measures before they have to disclose their donors would likely allow the so-called dark-money groups to keep their finances secret in most cases. 

Two political nonprofits that often work against each other on Colorado ballot initiatives — the liberal-leaning Bell Policy Center and conservative-leaning Advance Colorado Action — are supporting Senate Bill 237, which passed the state Senate unanimously Thursday.

The bill, sponsored by Senate President Steve Fenberg, a Boulder Democrat, and Senate Minority Leader Chris Holbert, a Douglas County Republican, would require political nonprofits to disclose their donors only if their spending on two or more ballot measures exceeds 30% of their total spending over three years. If they’re spending on only one ballot measure, the spending can’t exceed 20% of their total expenditures for three years if they want to keep their donors secret.

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