Sen. Rand Paul of Kentucky challenged the Republican Party establishment to win his seat in 2010. He started a nearly 13-hour filibuster Wednesday, demanding assurances that the Obama administration would not use drones in the U.S. to kill terrorist suspects. (Associated Press)

Sen. Rand Paul of Kentucky challenged the Republican Party establishment to win his seat in 2010. He started a nearly 13-hour filibuster Wednesday, demanding assurances that the Obama administration would not use drones in the U.S. to kill terrorist suspects. (Associated Press)