The Electoral College is provided for in the United States Constitution. The filibuster is not. In fact, the word doesn't appear in any of our founding documents. Its derivation is from the Spanish filibustero, meaning "pirate" or "freebooter." In the legislative context, a filibuster is the use of delaying tactics to block legislation. It is a mechanism available only in the Senate. As political scientist Jean Edward Smith has pointed out, "It is now possible for the senators representing 34 million people who live in the 21 least populous states — a little more than 11 percent of the nation's population - to nullify the wishes of the representatives of the remaining 88% of Americans."