Does the Danish sentence mean that she lost and only one person voted for her? Or that she lost with a difference of only a vote? The "correct solutions" are conflicting.
Strictly speaking it could mean both but if you ever hear the sentence it is almost 100% certain that they mean "she lost with a difference of only one vote".
I'd say, in English anyway, that that then would be losing by one vote. Is there a clearer way to say this in Danish or... are we just going to have to leave it to context?
By one vote is accepted and does make much more sense
By one vote is now the default correct answer.
But her emails!
Should demand a re-count!