From LaborNotes Blog:

Angry activists pointed to the fact that five of the six errant Democrats had received money from the insurance industry and Big Pharma, ranging from $100,000 to over $250,000. Three of the six senators had been endorsed by the California Labor Federation which, along with unions such as the Service Employees and AFSCME, was on record supporting the single-payer bill. The California Democratic Party was also on record supporting it.

Similar bills passed the legislature fairly easily in 2006 and 2008, only to be vetoed by then-Governor Arnold Schwarzenegger. At a time when premiums were rising and there were few other proposals out there, it was an easy vote for Democrats certain of the governor’s veto.

But when Congress passed federal health reform in 2010, defending that bill, as well as President Obama, became paramount for many Democrats. It became more difficult for legislators to vote for a single-payer bill that might be interpreted as deserting the president, and the Democratic leadership refused to put the bill up for a final vote in the Assembly.

Read more here.