It was no surprise – especially for those who were deluged with campaign mailers – that spending by political action committees during the final days of the Aug. 7 primary set a new record. PACs spent nearly $800,000 in the last 10 days before the election. In 2010, they spent less than $15,000 in the final days. Half of last-minute spending this year was by the Kansas Chamber of Commerce PAC, which targeted moderate GOP incumbents for defeat. Throughout the entire primary election cycle, the Kansas Chamber PAC spent $675,810, far more than any other PAC. And keep in mind, this is only the spending by PACs. It doesn't include the spending by advocacy groups such as Americans for Prosperity, which doesn't have to be disclosed.