Here in Portugal we can just submit a blank ballot, and it gets counted separately from the spoiled ballots. Seems easier than adding a new option to every ballot.
Sure, you can do that in most American elections too, but do the blank ballots have any effect besides registering your discontent in a tally.
(For what it's worth, I think that if you don't like anyone on the ballot, you're much better off encouraging better people to run or running for office yourself.)
