FACTBOX: Which Democrat has won each U.S. primary and caucus?

(Reuters) - Democrat Barack Obama defeated Hillary Clinton by just seven votes in the nominating contest on the Pacific island of Guam, a tiny U.S. territory where only four votes at the Democratic convention were at stake.

Illinois Sen. Obama holds a narrow lead in popular votes, delegates and states won over New York Sen. Clinton in the race for the Democratic presidential nomination and the right to face the presumptive Republican nominee, Arizona Sen. John McCain, in the November presidential election.

Here is a list of which Democratic candidate has won each of the nominating contests held to date in U.S. states, Washington, D.C., and U.S. territories:

Illinois Sen. Barack Obama:

Iowa, South Carolina, Alabama, Alaska, Colorado, Connecticut, Delaware, Georgia, Idaho, Illinois, Kansas, Minnesota, Mississippi, Missouri, North Dakota, Utah, Louisiana, Nebraska, Washington, Maine, the District of Columbia, Maryland, Virginia, Hawaii, Wisconsin, Vermont, U.S. Virgin Islands, Democrats Abroad, Wyoming, Guam.

New York Sen. Hillary Clinton:

New Hampshire, Michigan*, Nevada, Florida*, Arizona, Arkansas, California, Massachusetts, New Jersey, New Mexico, New York, Oklahoma, Tennessee, Ohio, Rhode Island, Texas, American Samoa, Pennsylvania.

*Results of Democratic contests in Michigan and Florida do not count because of a party dispute over the date of the contests.

(Compiled by Patricia Zengerle in Washington)