Complex sentence: In 1991 Tompkins was elected the national recording secretary of the Screen Actors Guild, and ran for president of the guild the following election, but was upset in her bid during an unusual turnout of voters.
Split into simpler sentences: In 1991 Tompkins was elected the national recording secretary of the Screen Actors Guild. She ran for president of the guild the following election, but was upset in her bid during an unusual turnout of voters.