Democrats and Republicans in four states are still looking for candidates as filing deadlines loom just days or weeks away.
The unusually competitive and crowded GOP field is lowering the bar to victory in many states.
Eight U.S. Senators went against the majority of their party during the controversial 1987 Robert Bork confirmation vote; seven of their seats have since flipped for good in subsequent elections.
Only three former governors coming off failed reelection bids have gone on to win a U.S. Senate seat during the last 70+ years.
Three-dozen states are currently in the midst of their longest Democratic or Republican presidential winning streaks.
In 2016, West Virginia Democrat Joe Manchin may become just the sixth former governor in the last 100 years who then won a U.S. Senate seat only to return to his gubernatorial post.
Ten of the 34 states with U.S. Senate races in 2014 found the Democratic Party endure one of its three worst performances in the direct election era.
The oldest U.S. Senator in Oklahoma history now has the most victories from the state in races to the nation’s upper legislative chamber.
The senior senator from Oklahoma is looking to win a record fifth U.S. Senate election this fall and would become the longest-serving member in the chamber from the Sooner State mid-way through his next term.
Seven candidates may seem like a handful, but it’s only half the number of Republicans who ran for the Sooner State’s U.S. Senate seat in 1920.