The Roy Blunt campaign says they raised "over $2.2 million" in Q2, while the Robin Carnahan campaign reports $1.5 million for the quarter. It's 2010, and a lame-o press release just won't work for such announcements; Blunt released his totals in a tweet, and the Carnahan camp created this video:
To my knowledge, Chuck Purgason has not yet released his totals.