Updated: July 15, 2014 at 7:18 pm
DENVER - Congressman Doug Lamborn and his Democrat challenger Irv Halter each raised about $70,000 in June, according to second quarter reports filed Tuesday.
But Halter has raised a commanding half-million dollars since he began his effort to unseat the incumbent and has a healthy store of cash.
The reports filed Tuesday cover June 5 to June 30, but don't include numbers reported by candidates in a pre-primary report at the beginning of June.
Halter, a retired Air Force major general, has pulled in $514,853 since he began his campaign and has $319,041 remaining in his account heading into the Nov. 4 general election. Halter has loaned his campaign or made in-kind contributions of $30,000.
Lamborn, who was first elected in 2006 for the 5th Congressional District, has raised $387,069, including a $100,000 loan to his campaign. After spending $358,971 to help win his primary against challenger Bentley Rayburn, he is down to $114,863 cash on hand.
"Momentum is clearly on our side," Halter's spokesman Ethan Susseles said. "Congressman Lamborn nearly lost his primary and now he has to run against a candidate that has a 3 to 1 fundraising advantage."
But the 5th Congressional District has a higher percentage of registered Republicans than any other district in Colorado - 43 percent - and the smallest percentage of Democrats at 21 percent. The remaining 34 percent of voters are unaffiliated or belong to the American Constitution Party or a fourth party.
Lamborn, whose spokesman declined to be interviewed for this story, may have seen his biggest challenge as the June primary when he won by 3,774 votes or 5 percent of the votes cast.
Halter didn't have a primary opponent and has been able to reserve his funds headed into the general election.
By comparison the heated run for the 6th Congressional District has both candidates pulling in millions.
Democrat challenger Andrew Romanoff raised $506,169 in June, bringing his total to $3.45 million with $2.67 million cash on hand.
The Republican incumbent, Congressman Mike Coffman, hadn't filed his second quarter report Tuesday afternoon but had raised a total of $2.9 million by June 4 and had $2 million cash on hand.
The race between Coffman and Romanoff in what has become a swing-district focused in Aurora has drawn national attention.
Contact Megan Schrader