The 2004 Maryland primary took place on March 2, 2004 as part of the 2004 United States Democratic presidential primaries. The delegate allocation is proportional; candidates are awarded delegates in proportion to the percentage of votes received, open to registered Democrats only. Frontrunner John Kerry won the primary with former Senator John Edwards coming in a distant second.
Maryland Democratic primary, 2004 Wikipedia
Primary date: March 2, 2004