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Spending topped $67 million in key Colorado primary races. But big money didn’t always win.

Analysis shows major amounts spent by campaigns, outside interests — mostly in Democratic races

Attorney General Phil Weiser speaks during an election watch party for his gubernatorial campaign as he declares victory in the Democratic primary against U.S. Sen. Michael Bennet on Tuesday, June 30, 2026, at Ace Eat Serve in Denver. (Photo by Timothy Hurst/The Denver Post)
Attorney General Phil Weiser speaks during an election watch party for his gubernatorial campaign as he declares victory in the Democratic primary against U.S. Sen. Michael Bennet on Tuesday, June 30, 2026, at Ace Eat Serve in Denver. (Photo by Timothy Hurst/The Denver Post)
Nick Coltrain - Staff portraits in The Denver Post studio on October 5, 2022. (Photo by Eric Lutzens/The Denver Post)
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The $67 million storm has passed. For now.

That is roughly how much was spent on all of Colorado’s competitive primaries for statewide and federal office — and almost all of it went to influence Democrat-vs.-Democrat contests as voters picked who would represent the party in November’s election, according to an analysis by The Denver Post. Millions more went to down-ballot races, such as local legislative races.

The rain from the proverbial storm of cash poured down in the form of candidate mailers, door knockers, and TV and digital ads, and in less apparent campaign infrastructure and polls. The vast majority of the money went directly to campaigns and supported direct messaging, staffing and other expenses of running for office.

But more than a third — almost $25 million — flooded the races through super PACs and other outside groups that approach politics with different levels of opacity.

The money also didn’t do much to predict eventual winners. Four of the most-monied candidates seeking statewide or federal offices won their primaries. Four others lost.

Paul Teske, a political scientist at the University of Colorado Denver, said it can be tough to tease out how much of a difference money can make in a campaign, especially if spending between candidates is in the same ballpark. But the amount this time also seems striking, even if there isn’t an immediate apples-to-apples comparison to prior election years.

“People realize this is a way to influence policy that can be effective — if it’s the right place, at the right time, in the right way,” Teske said.

Former New York City Mayor Michael Bloomberg appears to have been the single largest player in Colorado politics in the June 30 primaries. The billionaire pumped $5 million in cash into a state super PAC backing U.S. Sen. Michael Bennetap failed bid for governor against Attorney General Phil Weiser. Weiser ended up winning the race by more than 13 percentage points.

The race for the Democratic nomination for governor by far outstripped every other race in the primaries, with more than $24.5 million spent by either the super PACs backing the candidates or by the campaigns themselves.

That money was almost evenly split between the super PACs and the campaigns, though that number is skewed by the super PAC backing Bennet, Rocky Mountain Way. That political action committee spent nearly $11 million, almost twice as much as Bennetap official campaign spent.

The Republican side of the governor’s race saw a relatively paltry $4.1 million spent through June 29, the cutoff for the most recent batch of campaign data. Nonprofit leader Victor Marx, who had more than $3.2 million of that money backing him either directly or through a state super PAC, narrowly secured the nomination Thursday over state Sen. Barb Kirkmeyer and third-place state Rep. Scott Bottoms.

Manny Rutinel thanks his supporters after winning the Democratic primary in Colorado's 8th Congressional District on Tuesday, June 30th, 2026, at Las Dos Americas Tortilleria in Commerce City, Colorado. He will take on Republican U.S. Rep. Gabe Evans in the November election.(Chet Strange, Special to The Post)
Manny Rutinel thanks his supporters after winning the Democratic primary in Colorado’s 8th Congressional District on Tuesday, June 30th, 2026, at Las Dos Americas Tortilleria in Commerce City, Colorado. He will take on Republican U.S. Rep. Gabe Evans in the November election.(Chet Strange, Special to The Post)

On the federal side of the ledger, the money becomes even more opaque — though there was less of it. Campaigns’ federal reports cover fundraising and spending through June 10, though outside groups had to file more frequent spending reports in the lead-up to the election.

State Rep. Manny Rutinel benefited from the most outside money, $5.5 million, in his successful campaign for the Democratic nomination in the 8th Congressional District. By comparison, Shannon Bird, the former state representative who lost to Rutinel, saw $1.7 million spent to buoy her.

More than $3 million of outside help for Rutinel came from the Latino Victory Fund and the associated Latino Victory Project. Those groups have received money from Opportunity Forward Alliance, a dark-money group that describes itself as backing business-friendly policies, and 5000 Broadway Productions, the production company founded by Lin-Manuel Miranda.

He also benefited from almost $1 million spent by You Can Push Back, a super PAC supported by . And $1.2 million backing Rutinel’s campaign came from the SOMOS PAC, a super PAC that was backed by the nonprofit Advocacy Action Fund. That nonprofit has been linked and has a history of giving to self-styled progressive and abortion-rights advocacy groups.

That 8th District race — expected to be one of the most competitive in the nation, again — will almost certainly draw a gob-smacking amount of money and attention as the November general election nears. In 2024, the candidates and outside groups spent more than $40 million on the election that saw U.S. Rep. Gabe Evans, a Republican, win the seat. It was among in the country and is seen this time as key to whichever party will hold the House majority next year.

Now Evans is running for reelection in the 8th District, which stretches from the north Denver suburbs to Greeley.

Milat Kiros, the Democratic nominee in the state's 1st Congressional District, speaks with members of the media after a unity rally put on by the Colorado Democratic Party following Tuesday's primary election, on Thursday, July 2, 2026, at the Laborers' International Union of North America Local 720 headquarters in Denver. (Photo by Timothy Hurst/The Denver Post)
Milat Kiros, the Democratic nominee in the state’s 1st Congressional District, speaks with members of the media after a unity rally put on by the Colorado Democratic Party following Tuesday’s primary election, on Thursday, July 2, 2026, at the Laborers' International Union of North America Local 720 headquarters in Denver. (Photo by Timothy Hurst/The Denver Post)

U.S. Rep. Diana DeGette, who was on the wrong side of the primary night’s biggest upset in Colorado, was the second-largest beneficiary of outside money, largely as part of a last-minute surge to preserve her office. More than $2.3 million flew into that race to defend DeGette, whose 1st Congressional District mostly covers Denver.

Of that, more than $1.5 million came from the Pro-Choice Majority Action PAC, which in turn receives money from the EDW Action Fund, a pro-Democratic women’s group that is , or AIPAC.

By comparison, now-Democratic nominee Melat Kiros, a democratic socialist who beat DeGette by 13.4 percentage points, had just over $500,000 in outside spending support her campaign against the 30-year incumbent. Kiros’ campaign also spent less than $600,000 directly, or less than half of DeGette’s total campaign spending.

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