On March 12, 2012, for instance, Reid filed 12 cloture motions on nominees; all of the motions were withdrawn and all of the nominees with approved without any objection. And in 2007, Reid filed a cloture motion a mere 45 minutes after an amendment was first offered.
A close look at the data shows that many of these votes are unanimous or nearly unanimous, but Reid found it easier to file cloture than to allow votes on amendments. Indeed, a chunk of those cloture motions were simply dropped, never actually voted on, or “vitiated” in the senatorial nomenclature.
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If you want to measure the extent of “blocking” in the Senate, you first need to look at the number of actual votes on cloture. That adds up to 309 since 2007. Then you have to look at figure for “cloture invoked,” which means that the Democrats prevailed in a vote. That adds up to 189 — a success rate for the Democrats of better than 60 percent.
Subtracting 189 from 309, that means 120 Senate actions have been blocked during McConnell’s tenure as minority leader.
By contrast, during the eight years that Tom Daschle (D-S.D.) was minority leader (not counting a brief period in 2001), here’s how the statistics work out. There were 210 votes in that period, and cloture was invoked 67 times. Thus Democrats blocked 143 actions in that period–meaning the Republican majority had a success rate of only 32 percent.
By the data, it looks like McConnell is actually pretty bad at obstruction. Most of time, Democrats prevail over Republicans.