1. Sen. Strom Thurmond
The longest filibuster in U.S. history was delivered by legendary Sen. Strom Thurmond of South Carolina in opposition to the Civil Rights Act of 1957. He began speaking at 8:54 p.m. Aug. 28 and continued for 24 hours and 18 minutes. During his time on the floor, he (very slowly) recited the Constitution, the Bill of Rights, the Declaration of Independence, and several other historical documents.