Superdelegates are typically governors, lawmakers, and other party officials. Each party sends a different number of unpledged delegates to their national nomination conventions. Those numbers are based on formulas outlined in party rules.

For the 2008 conventions, Democrats have 792 superdelegates out of 4049 total delegates. 2025 delegate votes are needed to win the party nomination. Republicans have 463 unpledged delegates out of 2380 total. 1191 votes are needed to win the Republican presidential nomination.

The Democratic National Committee and the Republican National Committee have reduced the delegations in some states for violating party rules by beginning their Presidential Nominating Process prior to 5 February 2008. Florida, New Hampshire, Michigan, South Carolina, and Wyoming will each lose half of their delegates to the 2008 Republican National Convention. Florida and Michigan have been stripped of all delegates to the 2008 Democratic National Convention.

View each party's superdelegates and their endorsements:

• Democratic Superdelegates
• Republican Superdelegates