The public option is merely that - an option that would be offered for people who want to buy it. It would not be run by tax money, only premiums. Nobody would be forced to choose it. Some versions of the bill don't even contain a public option.
P.S. Just saw some media reports that say the vote "starts" debate on the bill. That's not technically true, but it is for practical purposes because if it had failed and the threat of filibuster remained, the Democrats would probably have just given up rather than face a filibuster.
I'm pretty sure this vote only starts debate. It is why Nelson is voting for debate in the first place, so that he could change the bill before final vote, otherwise it makes zero sense. All it takes is all republicans + Lieberman and booyah, filibuster wins. 60 votes fails.
Everything you wanted to know about cloture but were afraid to ask:
U.S. Senate: Reference Home > Virtual Reference Desk > Cloture
Quick fact: Wallace falsely claims health bills direct task force to decide what services "aren't covered" | Media Matters for America
Faux News Is Lying About Rationing Again
On Fox News Sunday, host Chris Wallace falsely claimed that it's a "fact" that the House and Senate health care bills direct the U.S. Preventive Services Task Force to "determine what services, what tests, screening, are covered and aren't covered," and asked whether that amounts to "government rationing."
In fact, the bills require insurers to implement task force recommendations in favor of specific preventive care, but they are not required to adopt those that recommend against preventive screening.