Specifically, the Dems only gained vote #60 on September 25, 2009, when Paul G. Kirk was appointed to Ted Kennedy’s Senate seat until the special election on January 19, 2010.
So the Dems had 60 votes for less than 4 months, and only if/when they voted in lockstep, which Republicans always tell me is a bad, bad thing for Democrats to do. And it depended on one Senator, Joe Lieberman, who was no longer a Democrat, having spent a great deal of his time in office running against the Democratic Party almost as much as he ran against the GOP.
There’s nothing wrong with that, but to say that the Dems could pass their full legislative programme due to a filibuster-proof majority that relied on Lieberman is a crock. (Just one for-instance: one thing that was briefly on the table in the negotiations leading up to the vote that got health care reform through the Senate was the idea of allowing persons 55 and older to buy into Medicare. This was an idea that practically the entire Senate Dem caucus supported. But Lieberman didn’t, so the idea was axed.)
Not to mention, Senator Robert Byrd, who turned 92 during that brief interval, was one of those 60 votes, and was having the health issues that come with advanced age, so he couldn’t be there all the time. (He died in June 2010.)
IOW, the oft-repeated lie that the Dems had a filibuster-proof majority for 2 years is bullshit. They had 60 *potential *votes a good deal of the time during a 4-month period, and they had 60 actual votes during that subset of those 4 months for whatever Lieberman and Ben Nelson could be persuaded to go along with.
Also, due to Senate rules, there were stringent limitations on how many pieces of legislation the Senate could pass. After a successful cloture vote (the vote that requires the 60-vote supermajority), the minority - or even a single Senator, AFAICT - can require 30 hours of debate after the cloture vote. That’s 30 hours of floor time with a quorum, not clock time. And the Republicans were using this all the way: get a cloture vote on a judicial appointment? 30 hours of debate, then a vote.
This isn’t to whine about the unfairness of it all: politics ain’t beanbag, or so they say. The point is that it’s easy to exaggerate how much the Dems could accomplish with their 4 months of ‘full control.’