The wealth of businessman John Brunner has allowed him to easily outspend his rivals in Missouri's Republican U.S. Senate primary.
New figures show Brunner's campaign spent nearly $2.8 million this past quarter, almost all of which came from his personal contributions. Much of that money went to TV ads.
Congressman Todd Akin and former state Treasurer Sarah Steelman each spent nearly $279,000 on their Senate campaigns.
All three Republicans are competing in the Aug. 7 primary for the right to challenge Democratic Sen. Claire McCaskill.
Akin reported about $1.4 million in his account at the start of July. Steelman had $562,000. Brunner had less than $183,000, but that comparatively low balance may not matter, because Brunner has said he will not allow his campaign to run short of cash.