FACTBOX: High-profile, uncommitted Democratic superdelegates

(Reuters) - The race for the 2008 Democratic presidential nomination may be settled by the superdelegates, members of Congress and other party insiders who are free to vote for who they want at the August Democratic presidential nominating convention in Denver.

Nearly 300 of the 796 superdelegates have yet to endorse either Sen. Hillary Clinton of New York or Sen. Barack Obama of Illinois.

Here are some of the high-profile superdelegates who have not yet taken a stand on who should be the party's nominee.

* U.S. House of Representatives Speaker Nancy Pelosi of California: She has drawn complaints from some Clinton supporters for saying members of Congress should reflect the will of the people in their districts in deciding who to back.

* U.S. Senate Democratic Leader Harry Reid of Nevada: In a recent interview with National Public Radio, Reid said superdelegates should vote for whomever they want.

* Former Vice President Al Gore, who was the Democrats' failed 2000 presidential candidate: In 2004, Gore backed Howard Dean, who lost the Democratic nomination to John Kerry.

* Former North Carolina Sen. John Edwards, who dropped his Democratic presidential bid earlier this year: He has said he will not back a candidate at this point.

* Democratic National Committee Chairman Howard Dean: Like other top DNC officers, party rules require Dean to remain neutral until someone wins the nomination.

* Sen. Joe Biden of Delaware and Rep. Dennis Kucinich of Ohio: both made unsuccessful bids for this year's Democratic presidential nomination.