Maybe I am confused. The sheriff sent notices to the permit holders and offered a day at the range if they made a donation to charity?
If that's true then the only release of information was to the permit holders themselves. The information wasn't sold to someone or published, they used the list to offer the day at the range to people that have permits to carry. So, they sent you a letter telling you that you have a permit to carry? So what? The permit holders already know, I hope.
And asking to donate to charity doesn't violate campaign laws, that I am aware of.