Who did Al Gore run against for president?

Al Gore did not run in the 2004 Democratic primary.

The candidates were John Kerry (Senator, MA), Robert Graham (Senator, FL), Carol Moseley Braun (former Senator, IL), Dick Gephardt (Representative, MO), Joe Lieberman (Senator, CT), Gen. Wesley Clark, Howard Dean (former Governor of VT), John Edwards (Senator, NC), Rev. Al Sharpton, Dennis Kucinich (Representative, OH), and the Honorable John Marx.