Colorado Newsline: Control of the Colorado State Senate is once again up for grabs in the 2020 election, and although most analysts favor Democrats to maintain their slight majority in the upper chamber, voters will ultimately determine the balance of power in the statehouse in a handful of key races next month.

But whatever the outcome, one thing is certain: Whoever controls the Colorado General Assembly in 2021 will have relied on the support of big corporations and opaque, deep-pocketed national political groups to get there.

Roughly two-thirds of the funds raised by the four primary political organizations supporting Democratic and Republican legislative candidates have come from corporations, federal political action committees and 501(c)(4) nonprofits — “dark money” groups that are not required to disclose their donors — according to a Newsline analysis of campaign finance disclosures.

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