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

(Reuters) - After Hillary Clinton's victories in Ohio, Texas and Rhode Island, she and fellow U.S. Sen. Barack Obama remained in a tight battle for the Democratic presidential nomination.

Arizona Sen. John McCain became the presumptive Republican nominee as his victories in Ohio, Texas, Vermont and Rhode Island drove his last major rival, former Arkansas Gov. Mike Huckabee, out of their party's race.

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

Illinois Sen. Barack Obama:

Iowa, South Carolina, Alabama, Alaska, Colorado, Connecticut, Delaware, Georgia, Idaho, Illinois, Kansas, Minnesota, Missouri, North Dakota, Utah, Louisiana, Nebraska, Washington, Maine, Washington, D.C., Maryland, Virginia, Hawaii, Wisconsin, Vermont, U.S. Virgin Islands, Democrats Abroad

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

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

Republicans: