As of May, 2010, the California Secretary of State reports that San Benito County has 34,562 eligible voters. Of those 24,736 (71.57%) are registered voters.  Of those, 11,959 (48.35%) are registered Democratic, 7,477 (30.23%) are registered Republican, 565 (2.28%)are registered American Independent, and 116 (0.47%) are Green Party.  The two incorporated municipalities of Hollister and San Juan Bautista have Democratic majorities on their voter rolls, whereas the unincorporated areas of San Benito County have a small Republican plurality in voter registration.
Question: How many eligible voters were not registered to vote as of May 2010?
Answer: 9826; 9826