Meanwhile, Trump breaks a statewide 152-year old state record set by Abraham Lincoln in 1864 for the best ever showing in the state.
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.
It has been 30 cycles since the last time multiple former Senators returned to their old job in the same cycle.
After the 2016 cycle, the party could reach record winning streaks for governor in five states across three regions of the country.
Since 1972, all seven sitting U.S. Senators who ran for reelection in the cycle of their failed presidential bid won another term – each by double digits.
Kasich, Cruz, and Carson received the most votes as former White House hopefuls; 10 GOPers won more votes as ex-candidates than when they were still in the race.
Kentucky became the sixth state where O’Malley has eclipsed one percent of the primary vote – all located in the South.
Sanders’ 15-point victory was the closest Democratic race in the Mountain State since before the Great Depression.
Only one West Virginia governor in history has subsequently served in the U.S. House.
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.