Hermione would definitely be one of his biggest supporters. She is intelligent and has a great understanding of the wizarding laws and politics. She could help Harry with formulating policies and making sure they are well - thought - out.
Well, he might start by reforming the Ministry's policies on magical creatures. For example, giving house - elves more rights and better working conditions. He could also focus on improving the education system at Hogwarts, perhaps by introducing new subjects related to modern magic.
Luna Lovegood might be an unexpected but interesting choice. Her unique perspective on magic and the world around her could lead to some very creative and forward - thinking policies. She would be able to see beyond the traditional boundaries of the wizarding world and might introduce new ways of thinking about magic and how wizards interact with other magical beings.
Neville Longbottom might be a key character in some fanfictions. He could be working closely with Harry in reforming the Herbology department or be involved in some sort of magical conservation efforts. Luna Lovegood could also be present, maybe running an alternative magical theory research department at the Ministry. And of course, some of the old Ministry employees like Kingsley Shacklebolt might still be around, helping Harry in his new role.
One interesting plotline could be Harry using his unique experiences as a student at Hogwarts to reform the Ministry. For example, he might create more fair laws regarding magical creatures, having befriended so many during his school days. Another could be his struggle with the pure - blood supremacist factions within the Ministry, trying to change the old - fashioned views that have long been ingrained there.
One possible plot could be Harry using his unique experiences to reform the Ministry. He might start by getting rid of any remaining Death Eater sympathizers in the Ministry. He could also focus on improving the education system for young wizards and witches, perhaps by introducing more practical and ethical magic teachings. And he would surely strengthen the Ministry's defenses against the Dark Arts, having faced Voldemort himself.
In this fanfiction, Harry could become a sort of living magic conduit. He could be able to manipulate magic in ways that are unheard of. He might be able to merge different spells together to create entirely new and powerful incantations. And perhaps he could use his new oneness with magic to heal the most serious of magical ailments with just a touch.
Well, a great plotline could be Hermione dealing with dark wizard threats that have emerged under her tenure. She would use her intelligence and knowledge of magic to outwit the villains. Also, there could be a sub - plot about her relationship with her former classmates. Maybe Harry and Ron play important roles in her administration, like being advisors or leading special magical tasks.
I'm not sure specifically if there is a well - known 'Harry Potter is the Prime Minister' fanfiction. But given the vastness of the fanfiction community, it's entirely possible. Fanfiction allows for all kinds of crossovers and alternate universes. So, someone might have written a story where Harry Potter, with his magical abilities and heroic nature, steps into the role of the Prime Minister to solve both magical and non - magical problems in a unique way.