Look at this from the point of view of other characters and not the point of view of the readers. Sasuke was a criminal, and I doubt anybody, with the exception of Team 7 and childhood friends, likes him enough to say he should become Hokage. He'd probably be imprisoned before he could become Hokage. Unless after the war is over, everybody starts recognizing Sasuke as a hero and stops wanting to kill him.
And anyway, everybody knows Naruto will become Hokage. It's been his dream since the very beginning of the series, and was his motivation for becoming a ninja in the first place. He's not just going to give up that title.