This election has limited possibilities for development.
First, Jin wins because he is cutthroat and knowledgable, but everyone hates him even more as they notice this and decide Lanka is the better leader.
Second, Lanka wins by Jin doing something noble and letting her have it, likely trying to make it seem like a coincidence or something because of his Jin-dere disease.
Third, Lanka wins by some fluke incident where she can actually overcome Jin (and maybe "save" him from some trouble, which would be FANTASTIC to wrap up that original grudge/trauma wall between them, and get us some actual progress on the most important point of the whole story).
Fourth, author throws us a complete screwball and the panda or some other ridiculous entry upstages them both. A doubtful, but possible, occurence.
Fifth, the two of them somehow make up and work together in the most cliched fashion and become P and VP together instead of competing. I find this to be the most implausible result given the author's writing style and the way the story's been so far.
Personal opinion says Jin is going to win, but make himself look absolutely horrible in the process, forcing the rest of them to depose him and make Lanka president instead (just as planned), and somewhere around that situation jin sort of opens up about his feels to lanka, or lanka starts to understand her own romantic feelings a bit more, but they don't actually get very far with it; just a half-step in the right direction, that Jin is still too stubborn to follow up on and Lanka is still too clueless to push forward with.
Personal opinion also says Hitomi has been a lesbian the whole time and I'm putting 80% odds she ends up with the hyena.