BYRON YORK: Obamacare will add to Dems’ 2016 problems.

Next month will mark five years since the Affordable Care Act became law. Obamacare was supposed to be popular by now, but it’s not. And as far as President Obama and the Democrats who passed it are concerned, the law’s current approval rating might be as good as it gets. That could be a serious problem for the party in 2016.

The most recent Kaiser Family Foundation poll on Obamacare, released last week, shows that 40 percent of Americans have a favorable opinion of the law, while 46 percent have an unfavorable opinion and the rest don’t know or won’t say. There have been some slight ups and downs over the years, but public opinion seems pretty set: A plurality of Americans has disapproved of Obamacare virtually since the day it was passed.

The basic problem is that Barack Obama promised his healthcare plan would benefit everybody. It doesn’t. Under Obamacare, the government subsidizes the health coverage of some Americans while making it more expensive for others. People who have faced higher premiums, higher deductibles, and narrower choices of doctors know they’re getting a bad deal.

Obamacare was designed to win the loyalty of a large number of Americans by offering subsidies not just to the lowest-income bracket but also to those with an income of over $90,000 a year for a family of four. But a lot of middle-class people aren’t feeling much benefit.

So it is no surprise that the only group of Americans who like Obamacare in the latest Kaiser poll are those who make less than $40,000 a year — and even they aren’t all that enthusiastic about it.

Well, they shouldn’t be. It stinks.