A super-PAC backing former Missouri state Treasurer Sarah Steelman (R) has just shy of $450,000 to spend in the closing weeks of her primary against businessman John Brunner (R) and Rep. Todd Akin (R-Mo.), a sum that could be a big boost for the candidate.

Steelman has struggled with fundraising throughout the campaign. She raised just $240,000 in the last fundraising quarter, and has only $560,000 in the bank for the rest of her campaign.

The super-PAC's money will help her stay competitive on the airwaves against Brunner, a self-funding candidate who has already spent nearly $5 million of his own money on the race and who most obsververs say has jumped into the lead.

The primary is on Aug. 7.