DailyKos:

Colorado representative Doug Lamborn has just made the final doo-doo step it what will be the shortest and most lackluster career the House has ever seen. Doug Lamborn's recorded threats to a pair of voters critical of his views has now reached the pages of both the Denver and Huffington Posts. Doug's local paper, the Colorado Springs Gazette, is eerily silent.[..]

Update: Here's the back story from Colorado Confidential. And here are Doug's threats, as printed by the Denver Post:

"Now there are consequences to this kind of thing, but I would like to work with you in a way that is best for everyone here concerned."

He didn't stop there, though. The message cut off before his inner Tony Soprano could kick in:

"Hello, this is Doug Lamborn again, I'm finishing up my message from a moment ago. I got cut off. It is critical that you get back to me as soon as possible on this because I'll be going back to Washington here in a few days and I have to make sure that this is resolved one way or another. And like I said I'd rather resolve this on a Scriptural level but if you are unwilling to do that I will be forced to take other steps, which I would rather not have to do."

What did the couple do to incur Lamborn's wrath? Wrote a letter to the editor of their paper denouncing his voting AGAINST stricter dog-fighting penalties. I'd say that this is a case for the House Ethics Committee, wouldn't you? Rep. Tubbs-Jones is the chairperson, if you'd like to contact them.