1904–05 United States Senate elections
The 1904–05 United States Senate elections were held on various dates in various states, coinciding with President Theodore Roosevelt's landslide election to a full term and the 1904 House of Representatives elections. As these U.S. Senate elections were prior to the ratification of the Seventeenth Amendment in 1913, senators were chosen by state legislatures.
Source: Wikipedia — 1904–05 United States Senate elections (CC BY-SA 4.0)