Peter Gosselin Fitzgerald is a retired American lawyer and politician who served as a United States Senator from Illinois. A member of the Republican Party, he served from 1999 to 2005. Fitzgerald defeated Democratic incumbent Carol Moseley Braun in 1998, becoming the first Republican to win a U.S. Senate race in Illinois since Charles Percy twenty years earlier. He had previously served in the Illinois State Senate from 1993 to 1998.

Carol Elizabeth Moseley Braun, also sometimes Moseley-Braun, is an American diplomat, politician, and lawyer who represented Illinois in the United States Senate from 1993 to 1999. Prior to her Senate tenure, Moseley Braun was a member of the Illinois House of Representatives from 1979 to 1988 and served as Cook County Recorder of Deeds from 1988 to 1992. She was elected to the U.S. Senate in 1992 after defeating Senator Alan J. Dixon in a Democratic primary. Moseley Braun served one term in the Senate and was defeated by Republican Peter Fitzgerald in 1998.