11262 - I researched every attempt to stop fascism in history. The success rate is 0%.
In 1933, German conservatives thought they could control Hitler. Two years later, they were being executed in their own homes. I spent weeks researching this question, desperately looking for counter-examples, for hope, for any time in history where people successfully stopped fascists after they started winning elections.
Here's what I found: Once fascists win power democratically, they have never been removed democratically. Not once. Ever.