How about if your county had more registered voters than eligible ones?
Here's the list of counties in Colorado who fill that bill:
|San Juan County||Colorado||115%|
|San Miguel County||Colorado||103%|
|Most of these are sparsely populated but Summit is possibly the wealthiest county in the state being populated with California refugees, and Boulder is the home of the Peoples Republic of Boulder which got there by registering transients (college students) and never checking to see if any of them went home after graduating.|
The results were released as a prerequisite to filing a lawsuit demanding a cleanup of the rolls before someone gets elected with 110% of the vote.
Here's the complete national list where you can check your own state.