I'll give a good example of how this 75% margin is bad.
Let's just say I'm a really, really terrible Minister. I mean the worst. I never do my job, I never fulfill any of my election promises, hell, I never even post in my Ministry's assigned forum since the day I was elected. Terrible job. However, I am active and I like to bitch a lot on the forums.
Let's say one day someone calls me out on my shenanigans and the majority of the region all agree that I've been doing a terrible job.
Oh well. Too bad.
As long as I can get a mere 26% of all voters to oppose my recall for any reason (ex. "Give him another chance", "You're all being mean", "I don't think this ministry should exist anyway so I don't care") then the 74% of all total voters can go screw.
And that's just plain stupid.