“Anti-Obamacare ads are dominating the airwaves in the election’s stretch run. According to Kantar Media’s Campaign Media Analysis Group, Republicans ran nearly 13,000 anti-Obamacare ads in Senate races during the week of October 20-26. That’s after they ran nearly 12,000 anti-Obamacare ads during the week of October 13-19 and over 11,000 during the week of October 6-12. In each of those three weeks, Republicans ran far more ads against Obamacare than they — or the Democrats — ran‎ on any other issue.‎
Judging by both parties’ ads in Senate races from October 20-26, the issues favoring Republicans the most seem to be #1 Obamacare, #2 spending, and #3 immigration. Over that span, Republicans ran nearly 13,000 more anti-Obamacare ads than Democrats did (although Democrats did run a few). In addition, Republicans ran nearly 10,000 more ads on budget/government spending and nearly 5,000 more on immigration. ‎(Meanwhile, the Democrats ran over 7,000 more ads on social issues, nearly 7,000 more ads on taxes, and over 5,000 more on Social Security.)”