The Yellowhammer State is tied with Kansas for the fewest years of sending lawmakers to the Senate from different political parties over the last century.
Bredesen could become the first sitting or ex-Democratic governor from Tennessee – and just the second from either major party – to win a U.S. Senate seat in the direct election era.
A Hatch retirement could give Romney the longest stretch between losing and winning U.S. Senate campaigns among major party nominees in the chamber’s history.
Jeff Flake is the eighth member of the chamber to call it quits after a single full term this century and the 43rd to do so since 1914.
Flake will tie Ralph Cameron for the shortest tenure in the chamber in state history.
Only five of 55 U.S. Senate partisan winning streaks of eight in a row have been halted in the subsequent contest during direct election era.
The Sunshine State is one of only three in which the Republican Party has failed to win consecutive races to the nation’s upper legislative chamber.
No appointed US Senator has ever won a primary runoff and only two incumbents who placed second in the initial primary have done so.
Mary Jo Walters will attempt to achieve what no primary challenger has accomplished against a sitting Democratic Wisconsin U.S. Senator: win even 15 percent of the primary vote.
Only one sitting or former state attorney general has been elected to the U.S. Senate in Illinois history – and none in nearly 200 years.