San Diego County October 5, 2020 7:05 am What San Diego County Residents Should Know About Voting by Mail The first batch of mail-in ballots will be delivered to some San Diego County residents’ mailboxes today. NBC 7’s Nicole Gomez breaks down what you need to know on voting by mail. US & World Videos 3:50 Small plane crashes into El Cajon neighborhood 1:25 SDSU gives campus tour to local students 2:20 Audio details what happened moments before small plane crashed in El Cajon 0:46 San Diego's next police chief could be confirmed Monday 0:23 Names of two pandas coming to San Diego revealed