In the 2010 highly charged congressional elections, candidates hit $2 million in contributions (not counting independent expenditures).
Democrats defending seats spent more than Republicans on the attack. But, of course, it was a Republican surge year (they took back the House of Representatives with a historic 63-seat pick up).
Kurtis Lee in his Denver Post blog reports Mike Coffman has already raised $1.37 million, with a rich $532,000 taken in during the first three months of this year.
It remains to be seen if Democrat Joe Miklosi will make a race of it. On paper, the district is competitive.
Denver Post article: Rep. Coffman raises $532,000 in first quarter