Prominant blogger Andrew Sullivan is often very in tune with mainstream public opinion. Here are some examples:
He was a fan of Ronald Reagan back when Reagan was popular
He endorsed George Bush Sr. in 1988
He endorsed Bill Clinton in 1992
He endorsed George Junior in 2000
He endorsed John Kerry in 2004 (very slightly ahead of public opinion there)
He endorsed Barack Obama in 2008
On gay marriage he was far ahead of public opinion but on most other issues his position evolves as does that of the American public at large. This is all a preamble to this development: Sullivan, after months of skepticicm on the public option, seems in this post to be leaning toward support.
Additionally, he cites this new NY Times poll showing widespread support for the public option. Hey, he's moving toward the prevailing public mood, what a surprise! Anyway, take that for what it's worth, a possible sign of the punditry moving toward public option support.