^Lt. Gov. Jesse D. Bright provided the tie-breaking vote to help the Democrats organize the chamber.
^Lt. Gov. Godlove Stein Orth provided the tie-breaking vote to help the Whigs organize the chamber.
^Lt. Gov. Paris Dunning provided the tie-breaking vote to help the Democrats organize the chamber.
^With a split Senate, John Robert Cravens, a Republican, was elected as Senate President Pro Tempore, giving Republicans functional control.[1]
^With a split Senate, Paris C. Dunning, a Democrat, continued as President Pro Tempore from his time leading it in 1863 when he was acting Lt. Governor. He had cut most ties with the Democratic party at the start of the Civil War, however, and acted functionally as an Independent and supported the Republican Governor.[1]
^No President Pro Tempore was elected, with Lt. Gov. Cumback taking the role of presiding over the Senate directly, giving Republicans functional control.
^No President Pro Tempore was elected, with Lt. Gov. Sexton taking the role of presiding over the Senate directly, giving Republicans functional control with the Independents.
^No President Pro Tempore was elected, with Lt. Gov. Gray taking the role of presiding over the Senate directly and breaking ties, giving Democrats functional control with the Independent.
^No President Pro Tempore was elected, with Lt. Gov. Gray taking the role of presiding over the Senate directly and breaking ties, giving Democrats functional control with Greenback cooperation.
^A Democrat, Frederick W. Viehe, was elected President Pro Tempore.
