White attended every Democratic National Convention as a delegate from 1964 to 2004, with the exception of the 1976 Democratic National Convention. She served as a delegate to the Democratic National Convention during the 1964, 1988, 1996, and 2004 presidential elections. During the 1968 Democratic presidential primary she served as an uncommitted delegate as a part of Utah's twenty-six member delegation to the Democratic National Convention. During the 1972 presidential election she served as a delegate to the Democratic National Convention and was the secretary of the Utah delegation. During the 1976 presidential election she served as an uncommitted alternate delegate to the Democratic National Convention. During the 1980 Democratic presidential primary she served as a delegate for Senator Ted Kennedy to the Democratic National Convention. During the 1984 Democratic presidential primary she served as one of two uncommitted delegates, although she voted for Gary Hart, to the Democratic National Convention while sixteen of Utah's delegates supported Hart and nine supported Walter Mondale. During the 2000 presidential election she served as a delegate to the Democratic National Convention and was the oldest member of Utah's twenty-nine member delegation to the convention.