I think that this sentence should be a little different:
If you WIN the election, what is the first thing you WILL do?
The sentence looks like a question to be asked to a candidate for election to office, such as a presidential candidate. The speaker is asking about the future.
That is, unless you mean that the candidate did not win the election. In that case, you would say, "If you had won the election, what is the first thing that you would have done?"
You can't say, "Did you win..." as a conditional. It doesn't exist as a conditional. You can say, about the past, "Had you won," and then continue the sentence, "...the election, what is the first thing you would have done?" _______
The sentence might -- not very likely, but possibly -- could be as you have it, Cocoricot. But that would mean that the candidate thinks and says that s/he will not win the election. Then the speaker thinks, "OK, I guess you won't win the election," and says, "But on the off-chance that you won, what is the first thing you would do?"
You might say, too, "Were you to win the election, what is the first thing you would do?"
This means, "If you were to win the election, what is the first thing you would do?"
"If you were to...." means that the speaker doesn't think the candidate has much chance, and the candidate doesn't think so either.
So, "if you won," and "if you were to win" is an admission by both the speaker and the listener than winning is not a probable result.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .