An average of seven senators have retired from the chamber each cycle during the past quarter-century; no incumbent up for reelection next year has yet closed the door on a 2018 bid.
The 10 Trump states with Democratic incumbents have voted for senate nominees from the opposing party of the sitting president 62 percent of the time over the last 50 years.
12 percent of Nebraska elections to the chamber have featured rematches between major party nominees; challengers have won 1 in 3 of these races but none in the last half-century.
In an unusually competitive race, Democrats failed to pick up a GOP-held seat in the Palmetto State for a nation-leading 61st election in a row.
Since 1964, the average victory margin in a Georgia U.S. House race has been 50 points; just 1 of the last 69 races since 2008 has been decided by less than five points.
The progressive senator would be the first major party White House hopeful from the Beaver State in the modern primary era.
The party of the sitting president has won 43 percent of gubernatorial races since the McKinley administration.
Herb Kohl’s nephew is seeking to become the first Badger State U.S. Representative since the 19th Century to be preceded by a relative in the chamber.
Women running for governor in New Jersey have won their party’s nomination each of the last four times they have appeared on the primary ballot since 1993.
More than twice as many Republican primary races for governor have been decided by single digits as Democratic nomination contests.