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DENVER — The arms race continues in the run-up to one of next year’s most competitive congressional races, with both Congressman Mike Coffman, R-Aurora, and his Democratic challenger, Andrew Romanoff, topping the $1 million mark for the year after both campaigns cleared $500,000 in contributions for the second straight quarter.

Coffman, one of the most vulnerable incumbents in Washington, brought in more than $566,000 between April and June, his campaign announced Tuesday morning.

That was enough to out-raise Romanoff, who brought in just over $500,000, according to his campaign.

Romanoff, the former statehouse Speaker, has $920,000 cash on hand, slightly more than Coffman’s $855,000.

“Coloradans want Congress to take a different course,” Romanoff said in a statement first released to FOX31 Denver.  “I’m grateful to have so many supporters leading the way.”

Coffman, who’s seeking a fourth term in Colorado’s 6th Congressional District, which was dramatically re-drawn last year to Democrats’ advantage, is a prolific fundraiser in his own right.

Like Romanoff, he also brought in more than $500,000 in the year’s first quarter.

In April, Republicans blasted Romanoff’s fundraising prowess as a sign he’s “bought and paid for by special interests”. The Democrat has again pledged not to take money from political interest groups, as he first did during an unsuccessful U.S. Senate primary challenge to Sen. Michael Bennet back in 2010.

According to Romanoff’s campaign, more than 80 percent of the contributions were $100 or less and 91 percent of the candidate’s donors live in Colorado.

The press release from the Starboard Group, which is handling Coffman’s fundraising efforts, didn’t provide details about the contributions.

“The outpouring of grassroots support for Congressman Coffman has been
incredible,” said Kristin Strohm, Coffman’s finance director.

“Mike continues to receive unprecedented support because of his common-sense record in Congress and the generous support of Colorado voters.”