What is the ruling on university elections for choosing a student committee that undertakes student activities, knowing that the slogan of these elections is "establishing democracy"?

Elections of all kinds, including student elections, are based on achieving benefits and averting harms. If the benefit of participating in student elections outweighs the harm, then it is permissible, such as choosing the most suitable person to manage permissible activities, or the lesser of two evils to avoid the worse. The slogan of democracy does not affect this, as student activities are not related to governance.