FACTBOX: Calendar of presidential primaries

(Reuters) - Here is a calendar of the remaining 2008 U.S. presidential nominating state primaries and caucuses. In some states the contests are nonbinding and separate caucuses or conventions are scheduled to select delegates to the national conventions.

FEBRUARY

* February 19: Hawaii (Democratic), Washington, Wisconsin

MARCH

* March 4: Ohio, Rhode Island, Texas, Vermont

* March 8: Wyoming (Democratic)

* March 11: Mississippi

APRIL

* April 22: Pennsylvania