More than five years after the single-payer system was scrapped from ObamaCare policy debates, just over 50 percent of people say they still support the idea, including one-quarter of Republicans, according to a new poll. The single-payer option – also known as Medicare for all – would create a new, government-run insurance program to replace private coverage. The system, once backed by President Obama, became one of the biggest casualties of the divisive healthcare debates of 2009. The idea remains extremely popular among Democrats, with nearly 80 percent in support, according to the poll, which was shared first with The Hill by the Progressive Change Institute.