At least one first-term incumbent has been defeated in 48 of the 52 election cycles during the direct election era.
Heller is the only Republican among the 15 U.S. Senators who serve states in which their party holds a minority of U.S. House seats; a dozen (including Heller) are up for reelection in 2018.
History suggests the nation is overdue for a record-setting U.S. Senate nail-biter and there are plenty of states that could serve up extremely close contests on November 8th.
If a handful of toss-up races all end up in the Democratic column, the party will have its strongest showing in races for governor since its formation nearly 190 years ago.
New Hampshire has both the largest (179 in a row) and longest (since 1856) streaks of fielding U.S. House nominees from both major parties; Minnesota, Idaho, and Montana also have streaks north of 100.
Over the last century, Indiana voters have never backed a presidential nominee without also supporting that party’s gubernatorial or U.S. Senate nominee.
Midwestern states account for 40 percent of the cumulative female lieutenant gubernatorial service in U.S. history along with the three longest current streaks (Minnesota, Iowa, and Wisconsin).
The Hoosier State has produced the second largest number of running mates in U.S. history.
It has been 135 years since the last – and only – time one senator directly followed another twice in the chamber.
It has been 30 cycles since the last time multiple former Senators returned to their old job in the same cycle.