Another newly formed super PAC, FSA PAC, or Fair Share Action, is dropping late money, this time on the Democrats’ side. The group reported spending $497,000 to buy an ad supporting Obama on the last day of October and more than $119,000 to support Montana Senator Jon Tester.

According to FSA PAC's FEC filing, the pro-Obama ad is airing in Colorado.

FSA is connected to a Washington, D.C.-based nonprofit social welfare organization, the Fair Share Alliance, which is not required to disclose its donors. The latter group's executive director is Brad Martin, a former ...