While the federal enrollment website HealthCare.gov appears to be improving by the day, polls show the “young invincibles” key to making the law work are becoming less likely to enroll.

Younger people were skeptical of the healthcare reform law even before its troubled rollout, despite their support for President Obama.

But polling indicates the problems facing HealthCare.gov — a site the administration initially touted as a hip, tech-friendly experience — have reinforced their doubts about the need to have health insurance at all.

“The trend is daunting for the White House but not necessarily surprising,” said Pew Research Center Director Michael Dimock.

“Younger folks are part of Obama’s base … but the rollout confirmed concerns that were already in their minds.”