Rand Paul's 13-hour filibuster doesn't come close to the longest talkathon in Senate history.
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Reuters
The South Carolina Democrat launched the longest filibuster in Senate history to try to prevent the body from voting on the Civil Rights Act of 1957. Cots were brought in from a nearby hotel for the legislators to sleep on while Thurmond discussed increasingly irrelevant and obscure topics, including his grandmother's biscuit recipe.