Stalin and Mother Teresa are running for Prime Minister of Canada. Stalin has a well-publicized plan to murder all the Ukrainians, of whom there are a million. Moreover, his economic policies are stupid, resulting in the impoverishment of the middle class, and no improvement for the needy. Mother Teresa is not only virtuous, but also extremely well-informed about economics, and has policies that promise great economic improvement for the needy, and no loss for the rich. So far, the choice seems easy. The night before the elections, an omniscient and perfectly truthful being tells you—and you know that this is true—that if Stalin is elected, he will succeed in all his plans—a million Ukrainians will be murdered, and the economy will be destroyed. But the being also tells you that if Mother Teresa is elected, earthquakes will destroy Toronto and Montreal, directly killing two million people, and despite Mother Teresa doing the best that can be done, the country will be plunged into an economic depression, whose net effect is the same as that of Stalin's economic policies. If Stalin is elected, the earthquake will happen in an uninhabited area (maybe the military parades will redistribute the geological stress). Oh, and neither Mother Teresa, nor Stalin, nor anybody other than you knows about the earthquake issue--and nobody will believe you if tell them.
The results of electing Stalin are, thus, better than of electing Mother Teresa: a million die, while on Mother Teresa's watch, two million die. Whom should you vote for?
I am not claiming that this has any significant resemblance to the upcoming Canadian or U.S. or other elections.
[Edited: Added lack of others' knowledge of earthquake condition. Also, fixed a typo.]