In 2008 , Super Tuesday was February 5 ; 24 states held 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 . In 2008 , Super Tuesday was February 5 ; 24 states held primaries or caucuses on this date , with 52 % of all pledged Democratic Party delegates and 41 % of the total Republican Party delegates at stake .