"No Democrat has won the Presidency since the early 19th century without winning Missouri. "
That's a statistically irrelevent statement. 4 years ago the mantra was, 'no republican has ever won without Calfornia.' and guess what happened. A republican won without California.
No, its a historical fact. Missouri is key for Democrats, along with the historical fact I posted about Hawaii.
...and California hasn't been in play for Republicans since at least 1988.
Who made that statement about California you posted?