there are two separate issues
the cost of health care
the cost of non employer provided insurance/medicare and Obamacare
1. Health care is rising for all independent of Obamacare. There is an Obamacare increase component but It is not quantified separately
2. Obamacare cost is rising terrifically when purchased through an exchange or direct. We don’t know about hidden cost rises like deductibles.
When equating to voters, #1 are by far the majority and #2 are a .decided minority and are not as harshly affected by Obamacare. The wrath of many of these voters will not benefit hillary.
Obamacare is not an issue actually affecting most voters.
The impact of Obamacare on most voters is the hidden costs.
Of course, being hidden, the voters don’t vote based on those hidden costs...unless the hidden is exposed and connected to them.
You are right, the direct cost of Obamacare impacts only a few ... even only a few of those on Obamacare as most of the increase is paid for by the rest of us ... one of the hidden costs of Obamacare.
Trump needs to get another 3% or 4% to guarantee a win. (Some think he might be winning anyway. But it is best to not count on that.)
So although Obamacare is more of a concern to a few, than to most, it is that 3% or 4% who are the few that need to be reached. Of course, those few are complaining to their family, in-laws, neighbors, co-workers and have an impact on the votes of many more than their few numbers.
In a dedicated thread we need to list ... and then quantify ... all the direct and hidden costs of healthcare, most but not all of which are attributable to Obamacare.