As 2013 slouches toward 2014, the political numbers for President Obama just keep getting worse. And – you guessed it – much of that has to do with the Affordable Care Act known as “Obamacare.” A new AP-GfK poll shows major doubts about Obama’s signature legislative achievement. Most troubling for the administration, that’s not just among those needing to sign up for new coverage through the HealthCare.gov website. Perhaps more politically significant, Americans who will continue to get healthcare coverage through their employers blame Obama's healthcare overhaul for their rising premiums and deductibles, according to this poll. Among the findings:...