What source do you have for the statement that most (frum) Jews are opposed? My impression is that most of the frum community really likes entitlements, and its only a handful of people on the political margins who worry about the loss of personal freedom or the macroeconomic impacts. Remember that most frum Jews routinely vote for the Democrats even though we disapprove of their social and foreign policies – but we do like entitlements.
Given that most Jews live in Blue states that will spend themselves into Greece at the drop of a hat, there’s a great deal of support from anyone who qualifies for Medicaid. There some concerns that people who can’t afford insurance now, or are getting by with low premium, high deductible policies will end up being subject to penalties for not buy unaffordable comprehensive policies, which will be aggrevated since Obamacare will make insurance and medical care more expensive.