Strong Mayor initiative also approved by voters
 

June 9, 2010 (San Diego) – By a resounding 68.9%, voters in San Diego County approved Proposition B, which imposes term limits for Supervisors. The measure is not retroactive to the current Board, but will limit future reigns to eight years.
 

But voters may not need to wait eight years for the opportunity to change two seats on the Board, which is currently composed of five Republicans who have served for decades. Both Ron Roberts and Bill Horn failed to gain the 50% majority needed to win outright in the primary—and both appear headed for run-off races against challengers in the fall.