In April, the Real Clear Politics average of polls showed 47 percent of Americans opposed Obamacare, while 41 percent supported it, a 6-percentage-point edge for opponents of the president's health care law, which at the time was still months away from implementation.The latest average of polls, less than two months into the law's rollout, shows 57 percent opposing Obamacare, with 38 percent supporting -- an enormous 19-point gap between opponents and supporters.The two numbers explain why Republicans made little progress when they tried to warn Americans about Obamacare. For years, GOP warnings about Obamacare were about something that had not yet arrived. People had not experienced it, did not have friends who had experienced it and didn't fully understand what it was.