Eventually, the Ministry is forced to acknowledge the emergency and act on it. Fudge is subsequently removed from office for incompetence and replaced by Rufus Scrimgeour.
Cornelius Fudge for instance was sacked because of his poor performance as Minister for Magic, and that led to his being succeeded by Rufus Scrimgeour.
Scrimgeour was, according to Dumbledore, a "man of action", having fought against Dark wizards throughout his career as an Auror and climbed ambitiously through the Ministry. He gave an impression of shrewd toughness and was more decisive and forceful than his predecessor, Cornelius Fudge.
His increasing lack of preventive action affected his popularity with the wizarding world: despite Fudge's efforts of keeping control, several people chose to believe Dumbledore and Harry over him, and by the summer of 1996, he had been ousted from office in disgrace and replaced by the more proactive Rufus Scrimgeour.
As a result, when Voldemort finally stepped into the open and declared open war on both Britain's wizarding and Muggle communities, Fudge left office in disgrace and was replaced by the ostensibly more proactive Scrimgeour. Gawain Robards replaced Scrimgeour as Head of the Auror Office.
He was replaced as Minister for Magic by Rufus Scrimgeour, but stayed in an advisory capacity and communicated news of the Second Wizarding War to the Muggle Prime Minister if Scrimgeour was unable to.
Harry describes Umbridge to Sirius Black, saying that she's vile enough to be a Death Eater, despite not being one. Umbridge is also depicted to be a prejudiced person, despising half-breeds and Muggle-born witches and wizards to the point of firing Hagrid due to his half-giant birth status.
Hermione eventually married Ron Weasley and together they had two children, Rose and Hugo. She became the godmother of Harry and Ginny Potter's eldest son James. By the year 2019, Hermione had become the thirty-sixth Minister for Magic.
What happened to the ministry of magic after Voldemort died?
After Lord Voldemort was finally killed for good by Harry during the Battle of Hogwarts, the fall of the Ministry was almost immediately reverted and its original regulations were restored, with Kingsley Shacklebolt being the newly appointed Minister for Magic.
After the conclusion of the Second Wizarding War, Hermione sought out her parents and returned their memories. They presumably then returned to England.
In Harry Potter and the Goblet of Fire, two of Voldemort's followers worked together to help him regain his body. These were the wizard Peter Pettigrew and the snake Nagini. Pettigrew mixed up a potion for Voldemort using unicorn blood and the venom of Nagini.
Lucius Malfoy's failure at the Department of Mysteries combined with accidentally destroying part of Voldemort's soul with the diary of Tom Riddle resulted in his loss of any standing with the Dark Lord. Some believed that he was safer in Azkaban than being free. Lucius was sentenced to life imprisonment in Azkaban.
Many people, like Rubeus Hagrid, viewed Fudge as a well-intentioned minister, but also viewed him as a bit of a bungler. While Fudge was accepting of all blood types of Wizards and witches, he mostly favored Pure Bloods, but he also agreed with Arthur Weasley's Muggle Protection act.
How did the Minister for Magic and one-time Auror great, Rufus Scrimgeour, meet his end in the Harry Potter saga? He was killed by Lord Voldemort himself. The third ex-Auror to gain office, Scrimgeour died in office at the hands of Lord Voldemort.
Was Lord Voldemort afraid of the accomplished Auror, Rufus Scrimgeour? It seems likely; Rufus was the only other wizard of near-Voldemort strength who showed no fear of the Dark Lord nor his more famous nemesis, Albus Dumbledore.
Bellatrix Lestrange briefly tortured Neville with the Cruciatus Curse, both to try to make Harry hand over the prophecy and to see how long Neville held out before "cracking" like his parents.
After the war, Ron became an Auror and helped reform and revolutionise the British Ministry of Magic. After two years as an Auror, he went to work at Weasleys' Wizard Wheezes with his brother George. He and Hermione eventually married and had two children, Rose and Hugo Granger-Weasley.
