Dude, just being linked to the world's greatest menace ONCE is enough for you to never be considered a candidate for a legal/political position. If any dude joins a terrorist organization would he ever be given the opportunity to lead. Whether it throws away his misdeeds or not, to the eyes of konoha and the world he will never gain the upperhand on Naruto. He just can't. To the village, Naruto is their hero, the dude who saved them from complete and utter destruction (they probably don't even know how he got them resurrected). Sasuke fighting WITH the alliance doesn't change much I'm afraid.
He'd have to literally solo the juubi and kill madara himself to overthrow Naruto in any way shape or form, and how likely is that. It's not about them forgiving him, it's about him going beyond Naruto. Reread chapter 540, where Ebisu is recalling the villagers talking about Naruto's feats with gaara and so on. Shikamaru and Kakashi are legitimate candidates but please do not forget who the main character is. And don't delude yourself into thinking he won't succeed because of "logic".
Edit: I meant 450 lmao! After Naruto beats Pain.