MathTrek: Checking It Twice

Philip Stark, a statistician at UC Berkeley, has been able to provide a more reliable technique for performing recounts of close elections.  As technology has entered into the voting realm, different kinds of errors have crept into the election system.  Based on election results, certain forms of recounts will undoubtedly need to be performed.  Hand counting is not necessarily any more accurate than the electronic count, each recount technique suffers from its own batch of problems.

Statistical methods have been developed to help provide an accurate recount procedure that takes into account the election results to verify that a sampling recount is 99% likely to be the same as a full hand recount.

The story below appeared on MathTrek.

By Julie J. Rehmeyer

Counting is hard. Neither people nor machines seem to be able to do it reliably. And that’s a nightmare for election officials who need an accurate ballot count to decide elections.

Eighteen states require officials to double-check the machine counts by hand for a portion of the ballots. But election officials have had little guidance on what to do with the recount results. If the election is close and the recount finds a few errors, should a registrar call for a larger recount or go ahead and certify the result? Most laws left it to their discretion.

Now Philip Stark, a statistician at the University of California, Berkeley, has developed a recount method that guarantees a 99 percent chance that the result is the same as it would be with a full hand count. Several counties in California plan to try out the method on ballot measures during the presidential primaries this year. If this trial and others go smoothly, California could adopt the method statewide.

MathTrek: Checking It Twice

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s