More than half of pro-Democratic TV ads in the home stretch to Election Day have mentioned health care, compared to around one-third of Republican ads, according to the Wesleyan Media Project. The prevalence of health care in this year's ads sets 2018 apart, according to Erika Franklin Fowler, co-director of the Wesleyan Media Project. That's a big change from the 2010 and 2014 midterms in particular, when Republicans regularly slammed Obamacare, former President Obama's 2010 signature legislative achievement which is also called the Affordable Care Act. Democratic ads, meanwhile, barely touched the topic, according to Wesleyan's data. (Danielle Kurtzleben, WBUR Radio)