It is imperative that Democracy is done, you may say the cost this time is too high, until the system is flipped and your candidate loses. Trump will likely be awful but if he is not elected then I really fear for America
Amusingly, all 4 times this has happened, it's let a Republican steal the election from a Democrat.
It's literally never been "when it happens to your candidate", because the Democrats have literally never won an election this way. Only Republicans have.