AdImpact is the canonical source that many journalists use to track political ad spending, where ads are running, the ability to see the actual ads and so forth. A few times I’ve considering subscribing for TPM during the peak of the big election cycles. (These are very high-dollar price points.) So I’m on their mailing list for the data overviews that are basically teasers for subscribing. I got one of those today and something immediately jumped out at me. The top political advertiser by spend this cycle is the Department of Homeland Security.