While Democrats up for re-election are facing heat over Obamacare, a Democratic-aligned super PAC launched a TV ad targeting the leading Republican in the North Carolina Senate race on the issue of health care. According to a Republican tracking ad buys, Senate Majority PAC is spending $736,000 over the next two weeks across four media markets to defend Democratic Sen. Kay Hagan and criticize her top Republican challenger, state Speaker Thom Tillis. (more…)