The Buffett Rule, a bill backed by President Obama that would ensure millionaires pay a comparable tax rate to middle-class Americans, fell to a Republican filibuster in the Senate this evening, despite a new poll showing it to be overwhelmingly popular. While the rule, named after billionaire investor Warren Buffett, earned a majority vote of 51-45, it didnít get the 60 votes needed to overcome a GOP filibuster. Sen. Susan Collins (R-ME) was the only Republican to vote yes, while one Democrat, Mark Pryor (AR), voted no. Sen. Joe Lieberman (I-CT) did not vote, but put out a statement opposing the bill. The vote is no surprise as Republicans vowed to block it, but Democrats wanted to put the GOP on the record as yet again filibustering to preserve lower tax rates for the wealthy. A CNN poll released today found that 72 percent of Americans ó including 53 percent of Republicans and almost 70 percent of independents ó support the Buffett Rule.