There absolutely will be polling places in California, but fewer than there were previously. If you choose to vote by mail, I’d encourage you to sign up for "Where’s My Ballot" to track when your ballot was mailed, received, and counted: https://www.sos.ca.gov/elections/ballot-status/wheres-my-ballot/
The press release from U.S Customs and Border Patrol mentioned most were for college-age students. No mention of of political party affiliation; sounds more like under-21 year olds looking for a fake I.D. to buy alcohol.
https://www.cbp.gov/newsroom/local-media-release/over-19k-fraudulent-ids-seized-cbp-officers-chicago
Might be still alive. I grabbed one at random (DORA QUITTELIER, 10/1918, 49417) and found an article about her a couple of years ago: https://generationcare.org/99-and-not-slowing-down-doras-story/