The LA Times reports that Campaign Money Watch is running an ad referring to Sen. Mitch McConnell.

In filing with the Federal Election Commission, Campaign Money Watch disclosed a new batch of donors paying for the attack on the Kentucky senator. Its biggest contributor was the liberal online advocacy group, MoveOn.org, which gave $400,000.

Campaign Money Watch received $130,000 from billionaire Jerome Kohlberg, a founder of the private equity firm Kohlberg Kravis Roberts & Co., and $30,000 from Communication Workers of America.