If you have an important letter or check you want to mail, you know the local post office is the safest place to go. And if you have an absentee ballot, you know you can mail it or drop it off at your county clerk’s office or an early voting site. Rules proposed by Secretary of State Maggie Toulouse Oliver’s office would mandate a certain number of absentee ballot drop boxes in every county and allow them just about anywhere – as long as they’re locked at all times and bolted to the ground. The minimum number of boxes would be mandated by a voter population formula set by the Secretary of State’s Office.