CHICAGO (AP) — A new analysis finds the nation’s health care overhaul deserves a place in advertising history as the focus of extraordinarily high spending on negative political TV ads that have gone largely unanswered by the law’s supporters.

The report, released Friday by nonpartisan analysts Kantar Media CMAG, estimates $445 million was spent on political TV ads mentioning the law since the enactment of the Affordable Care Act in 2010. Spending on negative ads outpaced positive ones by more than 15 to 1.