This is why the electoral college needs to be abolished. California is not "just one state", it's over 12% of the U.S. population.
Wouldn't it be procedurally a lot easier for Democrats to reform this by breaking California into say 6 states? They only need to pass an ordinary law and get the approval of the CA legislature for that, as opposed to a constitutional amendment to abolish the EC.
10 new Safe Democratic Senate seats? Yeah I'm sure Congress would go for that.
assuming fair division of the state and a 3:2 ratio of dems to reps, one would expect 4 new dem senators and 4 new rep senators