People who might vote for Republicans have decided it does not matter and don't participate. At the same time the few times republicans were in a tight race, the GOP never even showed up to help.
TONS of ads on TV, Radio, and fliers from the DNC... crickets GOP.
We also have Steve Garvey against Adam Schiff ... the GOP did NOTHING. The DNC promoted him because they wanted Schiff, and Garvey took votes from the other moderate Dem candidate.
People are so fed up with what they are having to live through. A leader, a person who can speak to their vision, could come in and gain support and win at this point with common sense ideas to make life better... The GOP has missed their chance again, but no big surprise.