[hyl]

Spoiler for spoilers for Oojima winning the election:

Without giving too much away , he only won the elections in 2 routes. The elections are heavily influenced on which heroine he picks, because some effect his manifest and his campaign strategy.

My prediction if he is going to win or not.

Spoiler for actual game spoilers this time, read at your own risk:

I have my doubts that he wins it.
He only won in Satsuki's story because Satsuki forfeited. Without Satsuki knowing it, the finance department used underhanded tactics that caused slander to Oojima and Satsuki took responsibility for that. Otherwise Satsuki still could have won, because she still had a small lead.

In Michiru's route he only won because he had to win it in order to progress further in the story. The elections were extremely rushed and it's somewhat hard to believe that he actually won it with ease using the same plan as in Chisato's route, seeing that he lost to Satsuki in that route and the plan was done better in Chisato's story.