Obama is losing the youth at many levels, as we have reported this week:

Now comes another survey from National Journal, Young Americans Expect Obamacare to Be Repealed:

The young Americans the Obama administration so desperately needs to help make the Affordable Care Act function are the ones most likely to believe the law is endangered, suggesting that sustained House Republican efforts to repeal and undermine the law are bearing some fruit.

More than half of 18-to-29-year-olds who were surveyed in the most recent United Technologies/National Journal Congressional Connection Poll say it is likely the law will be repealed in 2014, even though the chances of that actually occurring are remote.

According to the poll, 18 percent of respondents in this age group said it was “very likely” Obamacare would be repealed by Congress next year, while 33 percent said it was “somewhat likely” the law would be done away with. The survey has an overall margin of error of plus or minus 3.6 percentage points.

That has real-world implications. The administration has relentlessly wooed these so-called young invincibles—young, healthy Americans—to sign up to purchase health insurance through online exchanges. Those consumers, who tend to use health care services less frequently, are needed to subsidize the cost of treating older, sicker ones. Without their participation in large numbers (the target for next year is 40 percent of all new enrollees), premium rates for consumers in the exchanges could rise.

Although the poll pdf. linked above doesn’t give cross-tabs, according the National Journal the situation is particularly glum among African-Americans:

It also revealed widespread pessimism among African-Americans about the law’s future. A staggering 70 percent of those surveyed (in all age groups) believe it is “somewhat likely” or “very likely” the law will be repealed next year.

Sad trombones all around.