What is Super Tuesday? (Ref: Wikipedia)      

In the United States, Super Tuesday commonly refers to the Tuesday in early February or March of a presidential election year when the greatest number of states hold primary elections to select delegates to national conventions at which each party's presidential candidates are officially nominated. More delegates can be won on Super Tuesday than on any other single day of the primary calendar, and accordingly, candidates seeking the presidency traditionally must do well on this day to secure their party's nomination. In 2008, Super Tuesday is February 5; 24 states will hold primaries or caucuses on this date, with 52 percent of all pledged Democratic Party delegates and 41 percent of the total Republican Party delegates at stake.


History
The phrase "Super Tuesday" has been used to refer to presidential primary elections since at least 1984 as dates when a large number of states held presidential primaries. In fact, the 1984 primary season had three "Super Tuesdays," ending with "Super Tuesday III", when Walter Mondale finally secured the Democratic nomination.

Pundits often mistakenly claim that the phrase "Super Tuesday" first came into use for the primary elections that took place on March 8, 1988, in the Southern states of Texas, Florida, Tennessee, Louisiana, Oklahoma, Mississippi, Kentucky, Alabama, and Georgia leading up to the 1988 election in November. Southern Democrats came up with the idea of a regional primary in an effort to nominate a moderate candidate who would more closely represent their interests. (Their plan ultimately did not succeed as Jesse Jackson, Al Gore, and Michael Dukakis split the Super Tuesday primaries, and Dukakis was subsequently nominated.) Since then, the particular states holding primaries on Super Tuesday have varied from year to year. Subsequent "Super Tuesdays" have taken place on March 10, 1992; March 12, 1996; March 7, 2000; and March 2, 2004. In 2000, 16 states held primaries on Super Tuesday, the largest presidential primary election day in U.S. history.

Convincing wins in Super Tuesday primaries have usually propelled candidates to their party's nomination. While the Iowa caucus and New Hampshire primary receive much press attention because they are first, they are sometimes criticized for being small states that are unrepresentative of the U.S. as a whole. Since Super Tuesday primaries are held in a large number of states from geographically and socially diverse regions of the country, Super Tuesday typically represents a Presidential candidate's first test of national electability. In 1992, after losing earlier primaries, Democrat Bill Clinton emerged as a candidate "back from the dead" when he convincingly won a number of Southern primaries on Super Tuesday. Clinton ultimately went on to win the Democratic nomination and the presidency. In 1996, Republican Bob Dole's Super Tuesday sweep sealed his bid for the Republican nomination. In 2000, Democrat Al Gore and Republican George W. Bush cemented their nomination bids with Super Tuesday victories, and both went on to win their parties' nominations. In 2000, approximately 81% of Democratic delegates and 18% of Republican delegates needed to secure nomination were up for grabs on Super Tuesday.