Political candidates and activists in Maine, especially in rural areas, often got a sharp reaction five years ago when they knocked on doors to promote universal health care.

“The reaction was, ‘Oh, you’re a commie,’” said Phil Bailey, who back then advocated for various Democratic causes.

Now, voters in those same conservative areas have a different take.

“Of course” is a common response to calls for universal coverage, said Bailey, now executive director of Maine AllCare, part of a national coalition campaigning for single-payer health care. The organization saw enough growing momentum and received enough financial support to justify hiring Bailey and another full-time staffer last summer for the previously volunteer-led group.

Watch: What if we switch to a single-payer health care system?