Contact: Mark Church, Chief Elections Officer & Assessor-County Clerk-RecorderAlternate: Jim Irizarry, Assistant Chief Elections Officer & Assessor-County Clerk-Recorder (Redwood City, CA) The deadline to register is Monday, April 19, 2021, for the May 4, 2021 Portola Valley School District Special Mail Ballot Election. Voter Registration forms sent by mail must be postmarked on or before April 19, 2021.